252645331124 has 6 divisors (see below), whose sum is σ = 442129329474. Its totient is φ = 126322665560.

The previous prime is 252645331123. The next prime is 252645331177. The reversal of 252645331124 is 421133546252.

It can be written as a sum of positive squares in only one way, i.e., 126323376400 + 126321954724 = 355420^2 + 355418^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252645331123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31580666387 + ... + 31580666394.

It is an arithmetic number, because the mean of its divisors is an integer number (73688221579).

Almost surely, 2^252645331124 is an apocalyptic number.

It is an amenable number.

252645331124 is a deficient number, since it is larger than the sum of its proper divisors (189483998350).

252645331124 is a wasteful number, since it uses less digits than its factorization.

252645331124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63161332785 (or 63161332783 counting only the distinct ones).

The product of its digits is 172800, while the sum is 38.

Adding to 252645331124 its reverse (421133546252), we get a palindrome (673778877376).

The spelling of 252645331124 in words is "two hundred fifty-two billion, six hundred forty-five million, three hundred thirty-one thousand, one hundred twenty-four".