252664565 has 8 divisors (see below), whose sum is σ = 319155360. Its totient is φ = 191493072.

The previous prime is 252664553. The next prime is 252664567. The reversal of 252664565 is 565466252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252664565 - 2⁴ = 252664549 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252664567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1329719 + ... + 1329908.

It is an arithmetic number, because the mean of its divisors is an integer number (39894420).

Almost surely, 2^252664565 is an apocalyptic number.

It is an amenable number.

252664565 is a deficient number, since it is larger than the sum of its proper divisors (66490795).

252664565 is a wasteful number, since it uses less digits than its factorization.

252664565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659651.

The product of its digits is 432000, while the sum is 41.

The square root of 252664565 is about 15895.4259143944. The cubic root of 252664565 is about 632.1907146554.

The spelling of 252664565 in words is "two hundred fifty-two million, six hundred sixty-four thousand, five hundred sixty-five".