25270400164 has 24 divisors (see below), whose sum is σ = 44333100000. Its totient is φ = 12603838080.

The previous prime is 25270400137. The next prime is 25270400201. The reversal of 25270400164 is 46100407252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3366087 + ... + 3373585.

It is an arithmetic number, because the mean of its divisors is an integer number (1847212500).

Almost surely, 2^25270400164 is an apocalyptic number.

It is an amenable number.

25270400164 is a deficient number, since it is larger than the sum of its proper divisors (19062699836).

25270400164 is a wasteful number, since it uses less digits than its factorization.

25270400164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483 (or 9481 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The spelling of 25270400164 in words is "twenty-five billion, two hundred seventy million, four hundred thousand, one hundred sixty-four".