252555975 has 72 divisors (see below), whose sum is σ = 536215680. Its totient is φ = 115434720.

The previous prime is 252555973. The next prime is 252555991. The reversal of 252555975 is 579555252.

It is a happy number.

252555975 is a `hidden beast` number, since 2 + 5 + 2 + 55 + 597 + 5 = 666.

It is not a de Polignac number, because 252555975 - 2¹ = 252555973 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 252555975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252555973) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 39556 + ... + 45494.

It is an arithmetic number, because the mean of its divisors is an integer number (7447440).

Almost surely, 2^252555975 is an apocalyptic number.

252555975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

252555975 is an abundant number, since it is smaller than the sum of its proper divisors (283659705).

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

252555975 is an equidigital number, since it uses as much as digits as its factorization.

252555975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5971 (or 5954 counting only the distinct ones).

The product of its digits is 787500, while the sum is 45.

The square root of 252555975 is about 15892.0097847944. The cubic root of 252555975 is about 632.1001341833.

The spelling of 252555975 in words is "two hundred fifty-two million, five hundred fifty-five thousand, nine hundred seventy-five".