252640975 has 24 divisors (see below), whose sum is σ = 324166752. Its totient is φ = 195187200.

The previous prime is 252640951. The next prime is 252640991. The reversal of 252640975 is 579046252.

It is not a de Polignac number, because 252640975 - 2⁵ = 252640943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104379 + ... + 106771.

It is an arithmetic number, because the mean of its divisors is an integer number (13506948).

Almost surely, 2^252640975 is an apocalyptic number.

252640975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

252640975 is a deficient number, since it is larger than the sum of its proper divisors (71525777).

252640975 is a wasteful number, since it uses less digits than its factorization.

252640975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2542 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 252640975 is about 15894.6838597060. The cubic root of 252640975 is about 632.1710392370.

The spelling of 252640975 in words is "two hundred fifty-two million, six hundred forty thousand, nine hundred seventy-five".