25686375972 has 48 divisors (see below), whose sum is σ = 60784722432. Its totient is φ = 8440830720.

The previous prime is 25686375971. The next prime is 25686376007. The reversal of 25686375972 is 27957368652.

It is not an unprimeable number, because it can be changed into a prime (25686375971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2264058 + ... + 2275374.

It is an arithmetic number, because the mean of its divisors is an integer number (1266348384).

Almost surely, 2^25686375972 is an apocalyptic number.

It is an amenable number.

25686375972 is an abundant number, since it is smaller than the sum of its proper divisors (35098346460).

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

25686375972 is a wasteful number, since it uses less digits than its factorization.

25686375972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13988 (or 13986 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 60.

The spelling of 25686375972 in words is "twenty-five billion, six hundred eighty-six million, three hundred seventy-five thousand, nine hundred seventy-two".