252444531125440 has 112 divisors (see below), whose sum is σ = 636085093201920. Its totient is φ = 95162335902720.

The previous prime is 252444531125363. The next prime is 252444531125509. The reversal of 252444531125440 is 44521135444252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107531082 + ... + 109853641.

Almost surely, 2^{252444531125440} is an apocalyptic number.

252444531125440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252444531125440 is an abundant number, since it is smaller than the sum of its proper divisors (383640562076480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252444531125440 is a wasteful number, since it uses less digits than its factorization.

252444531125440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217384950 (or 217384940 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 46.

Adding to 252444531125440 its reverse (44521135444252), we get a palindrome (296965666569692).

The spelling of 252444531125440 in words is "two hundred fifty-two trillion, four hundred forty-four billion, five hundred thirty-one million, one hundred twenty-five thousand, four hundred forty".