25897832670 has 16 divisors (see below), whose sum is σ = 62154798480. Its totient is φ = 6906088704.

The previous prime is 25897832647. The next prime is 25897832683. The reversal of 25897832670 is 7623879852.

It is a self number, because there is not a number n which added to its sum of digits gives 25897832670.

It is a congruent number.

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, 431630515 + ... + 431630574.

It is an arithmetic number, because the mean of its divisors is an integer number (3884674905).

Almost surely, 2^25897832670 is an apocalyptic number.

25897832670 is an abundant number, since it is smaller than the sum of its proper divisors (36256965810).

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

25897832670 is a wasteful number, since it uses less digits than its factorization.

25897832670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863261099.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 25897832670 in words is "twenty-five billion, eight hundred ninety-seven million, eight hundred thirty-two thousand, six hundred seventy".