25402525164 has 36 divisors (see below), whose sum is σ = 64254238776. Its totient is φ = 8461930368.

The previous prime is 25402525153. The next prime is 25402525193. The reversal of 25402525164 is 46152520452.

25402525164 is a `hidden beast` number, since 2 + 540 + 2 + 5 + 2 + 51 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176829 + ... + 286484.

It is an arithmetic number, because the mean of its divisors is an integer number (1784839966).

Almost surely, 2^25402525164 is an apocalyptic number.

It is an amenable number.

25402525164 is an abundant number, since it is smaller than the sum of its proper divisors (38851713612).

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

25402525164 is a wasteful number, since it uses less digits than its factorization.

25402525164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464846 (or 464841 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 25402525164 in words is "twenty-five billion, four hundred two million, five hundred twenty-five thousand, one hundred sixty-four".