25320904 has 16 divisors (see below), whose sum is σ = 54259200. Its totient is φ = 10851792.

The previous prime is 25320881. The next prime is 25320923. The reversal of 25320904 is 40902352.

It is a happy number.

It is a super-2 number, since 2×25320904² = 1282296358754432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226024 + ... + 226135.

It is an arithmetic number, because the mean of its divisors is an integer number (3391200).

Almost surely, 2^25320904 is an apocalyptic number.

It is an amenable number.

25320904 is an abundant number, since it is smaller than the sum of its proper divisors (28938296).

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

25320904 is a wasteful number, since it uses less digits than its factorization.

25320904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452172 (or 452168 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25320904 is about 5031.9880762975. The cubic root of 25320904 is about 293.6475638602.

The spelling of 25320904 in words is "twenty-five million, three hundred twenty thousand, nine hundred four".