25985065888 has 48 divisors (see below), whose sum is σ = 51367516200. Its totient is φ = 12939457536.

The previous prime is 25985065793. The next prime is 25985065919. The reversal of 25985065888 is 88856058952.

It can be written as a sum of positive squares in 4 ways, for example, as 20156048784 + 5829017104 = 141972^2 + 76348^2 .

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, 13331538 + ... + 13333486.

Almost surely, 2^25985065888 is an apocalyptic number.

It is an amenable number.

25985065888 is a deficient number, since it is larger than the sum of its proper divisors (25382450312).

25985065888 is a wasteful number, since it uses less digits than its factorization.

25985065888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 55296000, while the sum is 64.

The spelling of 25985065888 in words is "twenty-five billion, nine hundred eighty-five million, sixty-five thousand, eight hundred eighty-eight".