252591813528 has 16 divisors (see below), whose sum is σ = 631479533880. Its totient is φ = 84197271168.

The previous prime is 252591813491. The next prime is 252591813553. The reversal of 252591813528 is 825318195252.

It is a super-2 number, since 2×252591813528² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5262329425 + ... + 5262329472.

Almost surely, 2^252591813528 is an apocalyptic number.

It is an amenable number.

252591813528 is an abundant number, since it is smaller than the sum of its proper divisors (378887720352).

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

252591813528 is a wasteful number, since it uses less digits than its factorization.

252591813528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524658906 (or 10524658902 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 51.

The spelling of 252591813528 in words is "two hundred fifty-two billion, five hundred ninety-one million, eight hundred thirteen thousand, five hundred twenty-eight".