25607567655 has 24 divisors (see below), whose sum is σ = 45330846912. Its totient is φ = 13366785984.

The previous prime is 25607567627. The next prime is 25607567669. The reversal of 25607567655 is 55676570652.

It is a happy number.

25607567655 is a `hidden beast` number, since 2 + 560 + 7 + 5 + 6 + 76 + 5 + 5 = 666.

It is not a de Polignac number, because 25607567655 - 2⁶ = 25607567591 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6051684 + ... + 6055913.

It is an arithmetic number, because the mean of its divisors is an integer number (1888785288).

Almost surely, 2^25607567655 is an apocalyptic number.

25607567655 is a deficient number, since it is larger than the sum of its proper divisors (19723279257).

25607567655 is a wasteful number, since it uses less digits than its factorization.

25607567655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12107655 (or 12107652 counting only the distinct ones).

The product of its (nonzero) digits is 13230000, while the sum is 54.

The spelling of 25607567655 in words is "twenty-five billion, six hundred seven million, five hundred sixty-seven thousand, six hundred fifty-five".