25904658608 has 20 divisors (see below), whose sum is σ = 50286258408. Its totient is φ = 12927559680.

The previous prime is 25904658589. The next prime is 25904658623. The reversal of 25904658608 is 80685640952.

It is a self number, because there is not a number n which added to its sum of digits gives 25904658608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539473 + ... + 1556208.

Almost surely, 2^25904658608 is an apocalyptic number.

It is an amenable number.

25904658608 is a deficient number, since it is larger than the sum of its proper divisors (24381599800).

25904658608 is a wasteful number, since it uses less digits than its factorization.

25904658608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096212 (or 3096206 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 53.

The spelling of 25904658608 in words is "twenty-five billion, nine hundred four million, six hundred fifty-eight thousand, six hundred eight".