25457631164 has 12 divisors (see below), whose sum is σ = 50915262384. Its totient is φ = 10910413344.

The previous prime is 25457631151. The next prime is 25457631233. The reversal of 25457631164 is 46113675452.

25457631164 is an admirable number.

It is a congruent number.

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, 454600529 + ... + 454600584.

It is an arithmetic number, because the mean of its divisors is an integer number (4242938532).

Almost surely, 2^25457631164 is an apocalyptic number.

It is an amenable number.

25457631164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25457631164 is a wasteful number, since it uses less digits than its factorization.

25457631164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909201124 (or 909201122 counting only the distinct ones).

The product of its digits is 604800, while the sum is 44.

The spelling of 25457631164 in words is "twenty-five billion, four hundred fifty-seven million, six hundred thirty-one thousand, one hundred sixty-four".