252379985 has 24 divisors (see below), whose sum is σ = 358509480. Its totient is φ = 169424640.

The previous prime is 252379979. The next prime is 252379987. The reversal of 252379985 is 589973252.

It can be written as a sum of positive squares in 4 ways, for example, as 11478544 + 240901441 = 3388^2 + 15521^2 .

It is not a de Polignac number, because 252379985 - 2²² = 248185681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252379987) 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, 8180 + ... + 23909.

It is an arithmetic number, because the mean of its divisors is an integer number (14937895).

Almost surely, 2^252379985 is an apocalyptic number.

It is an amenable number.

252379985 is a deficient number, since it is larger than the sum of its proper divisors (106129495).

252379985 is a wasteful number, since it uses less digits than its factorization.

252379985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32129 (or 32118 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 50.

The square root of 252379985 is about 15886.4717605893. The cubic root of 252379985 is about 631.9532767694.

The spelling of 252379985 in words is "two hundred fifty-two million, three hundred seventy-nine thousand, nine hundred eighty-five".