It's about one-thirtieth as heavy as The Golden Gate Bridge.
In other words, 25,000 tonnes is 0.0311 times the weight of The Golden Gate Bridge, and the weight of The Golden Gate Bridge is 32.20 times that amount.(San Francisco, California and Marin County, California) (Post 1986 weight reduction; total weight of bridge, anchorage, and approaches)
Following the completion of the 1986 project to eliminate excess material, the total weight of the Golden Gate Bridge — including its anchorages and approaches — is 805,000 tonnes. The two main cables in the spanning the bridge are spun out of a total of 129,000 km (80,200 mi) of wire.
It's about forty times as heavy as Christ the Redeemer (statue).
In other words, 25,000 tonnes is 39.40 times the weight of Christ the Redeemer (statue), and the weight of Christ the Redeemer (statue) is 0.0254 times that amount.(a.k.a. O Cristo Redentor, a.k.a. Christo redemptor) (Rio de Janeiro, Brazil)
Christ the Redeemer weighs 635 tonnes. The statue overlooks the city of Rio de Janeiro from atop the 709.9-meter (2,329 ft) granite peak in the Tijuca Forest National Park.
It's about 150 times as heavy as a House.
In other words, the weight of a House is 0.00625 times 25,000 tonnes.(149 sq. m, single-level, unfurnished)
A 149 sq. m (1,600 sq. ft), single-story, unfurnished house (without extensive masonry) of the type commonly found in America would weigh approximately 156 tonnes, based on the weight of the included materials. In contrast, a yurt — a type of dwelling structure popular among nomadic peoples of East Asia — typically weighs less than 0.460 tonnes.
It's about one-two-hundred-fiftieth as heavy as The Great Pyramid of Giza.
In other words, the weight of The Great Pyramid of Giza is 240 times 25,000 tonnes.(a.k.a. Pyramid of Khufu, a.k.a. Pyramid of Cheops) (Cairo, Egypt)
The Great Pyramid of Giza has an estimated mass of 5,900,000 tonnes. The 2,300,000 stones used in the construction of the pyramid weighed an average 2.27 tonnes and were quarried from distances of up to 805 km (500 mi) away.
It's about 250 times as heavy as a Blue Whale.
In other words, 25,000 tonnes is 239 times the weight of a Blue Whale, and the weight of a Blue Whale is 0.00418 times that amount.(Balaenoptera musculus)
Blue whales weigh between 105 tonnes. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 0.000001000 tonnes each.
It's about 350 times as heavy as The Space Shuttle.
In other words, the weight of The Space Shuttle is 0.0029 times 25,000 tonnes.(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 71 tonnes. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 20 tonnes.
It's about 2,000 times as heavy as an Anchor of a Cruise Ship.
In other words, 25,000 tonnes is 2,210 times the weight of an Anchor of a Cruise Ship, and the weight of an Anchor of a Cruise Ship is 0.000452 times that amount.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 11.30 tonnes. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."