25402464216 has 32 divisors (see below), whose sum is σ = 70562401200. Its totient is φ = 8467488000.

The previous prime is 25402464193. The next prime is 25402464281. The reversal of 25402464216 is 61246420452.

25402464216 is a `hidden beast` number, since 2 + 5 + 4 + 0 + 2 + 4 + 642 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 58801785 + ... + 58802216.

Almost surely, 2^25402464216 is an apocalyptic number.

It is an amenable number.

25402464216 is an abundant number, since it is smaller than the sum of its proper divisors (45159936984).

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

25402464216 is a wasteful number, since it uses less digits than its factorization.

25402464216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117604016 (or 117604006 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 25402464216 its reverse (61246420452), we get a palindrome (86648884668).

The spelling of 25402464216 in words is "twenty-five billion, four hundred two million, four hundred sixty-four thousand, two hundred sixteen".