252012665 has 4 divisors (see below), whose sum is σ = 302415204. Its totient is φ = 201610128.

The previous prime is 252012653. The next prime is 252012689. The reversal of 252012665 is 566210252.

252012665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153685609 + 98327056 = 12397^2 + 9916^2 .

It is a cyclic number.

It is not a de Polignac number, because 252012665 - 2²⁰ = 250964089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25201262 + ... + 25201271.

It is an arithmetic number, because the mean of its divisors is an integer number (75603801).

Almost surely, 2^252012665 is an apocalyptic number.

It is an amenable number.

252012665 is a deficient number, since it is larger than the sum of its proper divisors (50402539).

252012665 is an equidigital number, since it uses as much as digits as its factorization.

252012665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50402538.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 252012665 is about 15874.9067713798. The cubic root of 252012665 is about 631.6465411617.

The spelling of 252012665 in words is "two hundred fifty-two million, twelve thousand, six hundred sixty-five".