252525252520 has 16 divisors (see below), whose sum is σ = 568181818260. Its totient is φ = 101010100992.

The previous prime is 252525252517. The next prime is 252525252527. The reversal of 252525252520 is 25252525252.

It can be written as a sum of positive squares in 2 ways, for example, as 244643008996 + 7882243524 = 494614^2 + 88782^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 252525252520.

It is not an unprimeable number, because it can be changed into a prime (252525252527) 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, 3156565617 + ... + 3156565696.

Almost surely, 2^252525252520 is an apocalyptic number.

252525252520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252525252520 is an abundant number, since it is smaller than the sum of its proper divisors (315656565740).

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

252525252520 is a wasteful number, since it uses less digits than its factorization.

252525252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313131324 (or 6313131320 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 37.

Adding to 252525252520 its reverse (25252525252), we get a palindrome (277777777772).

The spelling of 252525252520 in words is "two hundred fifty-two billion, five hundred twenty-five million, two hundred fifty-two thousand, five hundred twenty".