25670354172 has 24 divisors (see below), whose sum is σ = 61516345296. Its totient is φ = 8325520128.

The previous prime is 25670354167. The next prime is 25670354179. The reversal of 25670354172 is 27145307652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25670354179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28907613 + ... + 28908500.

It is an arithmetic number, because the mean of its divisors is an integer number (2563181054).

Almost surely, 2^25670354172 is an apocalyptic number.

It is an amenable number.

25670354172 is an abundant number, since it is smaller than the sum of its proper divisors (35845991124).

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

25670354172 is a wasteful number, since it uses less digits than its factorization.

25670354172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57816157 (or 57816155 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 25670354172 in words is "twenty-five billion, six hundred seventy million, three hundred fifty-four thousand, one hundred seventy-two".