25818952028 has 24 divisors (see below), whose sum is σ = 50358949200. Its totient is φ = 11510615808.

The previous prime is 25818952007. The next prime is 25818952043. The reversal of 25818952028 is 82025981852.

It is a super-3 number, since 3×25818952028³ (a number of 32 digits) contains 333 as substring.

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, 9990563 + ... + 9993146.

It is an arithmetic number, because the mean of its divisors is an integer number (2098289550).

Almost surely, 2^25818952028 is an apocalyptic number.

It is an amenable number.

25818952028 is a deficient number, since it is larger than the sum of its proper divisors (24539997172).

25818952028 is a wasteful number, since it uses less digits than its factorization.

25818952028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19983749 (or 19983747 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 50.

The spelling of 25818952028 in words is "twenty-five billion, eight hundred eighteen million, nine hundred fifty-two thousand, twenty-eight".