252445134565 has 8 divisors (see below), whose sum is σ = 326236789368. Its totient is φ = 186421022400.

The previous prime is 252445134559. The next prime is 252445134587. The reversal of 252445134565 is 565431544252.

It can be written as a sum of positive squares in 4 ways, for example, as 15253732036 + 237191402529 = 123506^2 + 487023^2 .

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

It is not a de Polignac number, because 252445134565 - 2¹¹ = 252445132517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1941885586 + ... + 1941885715.

It is an arithmetic number, because the mean of its divisors is an integer number (40779598671).

Almost surely, 2^252445134565 is an apocalyptic number.

It is an amenable number.

252445134565 is a deficient number, since it is larger than the sum of its proper divisors (73791654803).

252445134565 is a wasteful number, since it uses less digits than its factorization.

252445134565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883771319.

The product of its digits is 2880000, while the sum is 46.

The spelling of 252445134565 in words is "two hundred fifty-two billion, four hundred forty-five million, one hundred thirty-four thousand, five hundred sixty-five".