2565656652 has 24 divisors (see below), whose sum is σ = 6447035056. Its totient is φ = 789432768.

The previous prime is 2565656623. The next prime is 2565656663. The reversal of 2565656652 is 2566565652.

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, 8223103 + ... + 8223414.

Almost surely, 2^2565656652 is an apocalyptic number.

It is an amenable number.

2565656652 is an abundant number, since it is smaller than the sum of its proper divisors (3881378404).

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

2565656652 is a wasteful number, since it uses less digits than its factorization.

2565656652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16446537 (or 16446535 counting only the distinct ones).

The product of its digits is 3240000, while the sum is 48.

The square root of 2565656652 is about 50652.3114181377. The cubic root of 2565656652 is about 1368.9875930915.

The spelling of 2565656652 in words is "two billion, five hundred sixty-five million, six hundred fifty-six thousand, six hundred fifty-two".