252742385 has 16 divisors (see below), whose sum is σ = 346886400. Its totient is φ = 173174976.

The previous prime is 252742339. The next prime is 252742393. The reversal of 252742385 is 583247252.

It is a cyclic number.

It is not a de Polignac number, because 252742385 - 2⁸ = 252742129 is a prime.

Its product of digits (134400) is a multiple of the sum of its prime divisors (5600).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69236 + ... + 72794.

It is an arithmetic number, because the mean of its divisors is an integer number (21680400).

Almost surely, 2^252742385 is an apocalyptic number.

It is an amenable number.

252742385 is a deficient number, since it is larger than the sum of its proper divisors (94144015).

252742385 is a wasteful number, since it uses less digits than its factorization.

252742385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600.

The product of its digits is 134400, while the sum is 38.

The square root of 252742385 is about 15897.8735999504. The cubic root of 252742385 is about 632.2556123343.

The spelling of 252742385 in words is "two hundred fifty-two million, seven hundred forty-two thousand, three hundred eighty-five".