252717950565 has 64 divisors (see below), whose sum is σ = 452145830400. Its totient is φ = 133924741632.

The previous prime is 252717950489. The next prime is 252717950579. The reversal of 252717950565 is 565059717252.

252717950565 is a `hidden beast` number, since 2 + 5 + 2 + 7 + 1 + 79 + 5 + 0 + 565 = 666.

It is not a de Polignac number, because 252717950565 - 2⁹ = 252717950053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14086521 + ... + 14104449.

It is an arithmetic number, because the mean of its divisors is an integer number (7064778600).

Almost surely, 2^252717950565 is an apocalyptic number.

It is an amenable number.

252717950565 is a deficient number, since it is larger than the sum of its proper divisors (199427879835).

252717950565 is a wasteful number, since it uses less digits than its factorization.

252717950565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18603 (or 18597 counting only the distinct ones).

The product of its (nonzero) digits is 6615000, while the sum is 54.

The spelling of 252717950565 in words is "two hundred fifty-two billion, seven hundred seventeen million, nine hundred fifty thousand, five hundred sixty-five".