2565660432 has 40 divisors (see below), whose sum is σ = 6649306560. Its totient is φ = 852465280.

The previous prime is 2565660397. The next prime is 2565660457. The reversal of 2565660432 is 2340665652.

2565660432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2565660432² = 13165226904660853248, which contains 22 as substring.

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, 71007 + ... + 100862.

It is an arithmetic number, because the mean of its divisors is an integer number (166232664).

Almost surely, 2^2565660432 is an apocalyptic number.

It is an amenable number.

2565660432 is an abundant number, since it is smaller than the sum of its proper divisors (4083646128).

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

2565660432 is a wasteful number, since it uses less digits than its factorization.

2565660432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172191 (or 172185 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 2565660432 is about 50652.3487313274. The cubic root of 2565660432 is about 1368.9882654042.

The spelling of 2565660432 in words is "two billion, five hundred sixty-five million, six hundred sixty thousand, four hundred thirty-two".