252845865 has 24 divisors (see below), whose sum is σ = 441430080. Its totient is φ = 133877664.

The previous prime is 252845861. The next prime is 252845897. The reversal of 252845865 is 568548252.

It is a happy number.

252845865 is a `hidden beast` number, since 2 + 528 + 45 + 86 + 5 = 666.

252845865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252845865 - 2² = 252845861 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 252845865.

It is not an unprimeable number, because it can be changed into a prime (252845861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13957 + ... + 26466.

It is an arithmetic number, because the mean of its divisors is an integer number (18392920).

Almost surely, 2^252845865 is an apocalyptic number.

It is an amenable number.

252845865 is a deficient number, since it is larger than the sum of its proper divisors (188584215).

252845865 is a wasteful number, since it uses less digits than its factorization.

252845865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40573 (or 40570 counting only the distinct ones).

The product of its digits is 768000, while the sum is 45.

The square root of 252845865 is about 15901.1277901915. The cubic root of 252845865 is about 632.3418884368.

The spelling of 252845865 in words is "two hundred fifty-two million, eight hundred forty-five thousand, eight hundred sixty-five".