252503523136 has 28 divisors (see below), whose sum is σ = 501244298500. Its totient is φ = 126205747200.

The previous prime is 252503523119. The next prime is 252503523137. The reversal of 252503523136 is 631325305252.

It can be written as a sum of positive squares in 2 ways, for example, as 133517160000 + 118986363136 = 365400^2 + 344944^2 .

It is a junction number, because it is equal to n+sod(n) for n = 252503523095 and 252503523104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252503523137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541665 + ... + 893536.

Almost surely, 2^252503523136 is an apocalyptic number.

It is an amenable number.

252503523136 is a deficient number, since it is larger than the sum of its proper divisors (248740775364).

252503523136 is a wasteful number, since it uses less digits than its factorization.

252503523136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437962 (or 1437952 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 252503523136 its reverse (631325305252), we get a palindrome (883828828388).

The spelling of 252503523136 in words is "two hundred fifty-two billion, five hundred three million, five hundred twenty-three thousand, one hundred thirty-six".