25750724868 has 54 divisors (see below), whose sum is σ = 71547538062. Its totient is φ = 7803248640.

The previous prime is 25750724809. The next prime is 25750724903. The reversal of 25750724868 is 86842705752.

25750724868 is a `hidden beast` number, since 2 + 57 + 507 + 2 + 4 + 86 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18252550404 + 7498174464 = 135102^2 + 86592^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2951421 + ... + 2960132.

Almost surely, 2^25750724868 is an apocalyptic number.

It is an amenable number.

25750724868 is an abundant number, since it is smaller than the sum of its proper divisors (45796813194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25750724868 is a wasteful number, since it uses less digits than its factorization.

25750724868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911585 (or 5911569 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 54.

The spelling of 25750724868 in words is "twenty-five billion, seven hundred fifty million, seven hundred twenty-four thousand, eight hundred sixty-eight".