25906637232 has 120 divisors (see below), whose sum is σ = 82923859200. Its totient is φ = 7396202880.

The previous prime is 25906637221. The next prime is 25906637261. The reversal of 25906637232 is 23273660952.

25906637232 is a `hidden beast` number, since 2 + 5 + 9 + 0 + 6 + 637 + 2 + 3 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1401007 + ... + 1419377.

It is an arithmetic number, because the mean of its divisors is an integer number (691032160).

Almost surely, 2^25906637232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25906637232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41461929600).

25906637232 is an abundant number, since it is smaller than the sum of its proper divisors (57017221968).

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

25906637232 is a wasteful number, since it uses less digits than its factorization.

25906637232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19791 (or 19782 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 25906637232 in words is "twenty-five billion, nine hundred six million, six hundred thirty-seven thousand, two hundred thirty-two".