2504

2504 = 2 x 2 x 2 x 313.

2504 is 40004 in base 5 (A097251).

2504 is a Friedman number (A036057).

2504 is the number of forests of ordered trees on 9 total nodes (A052854).

2504 has a representation as a sum of two squares: 2504 = 2² + 50².

2504 divides 25⁴ - 1.

Source: What's Special About This Number?