13252571520 has 64 divisors (see below), whose sum is σ = 42242577840. Its totient is φ = 3534018560.

The previous prime is 13252571473. The next prime is 13252571543. The reversal of 13252571520 is 2517525231.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×13252571520² (a number of 21 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 7 ways as a sum of consecutive naturals, for example, 3449271 + ... + 3453110.

Almost surely, 2^13252571520 is an apocalyptic number.

13252571520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13252571520 is an abundant number, since it is smaller than the sum of its proper divisors (28990006320).

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

13252571520 is an equidigital number, since it uses as much as digits as its factorization.

13252571520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902403 (or 6902391 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The spelling of 13252571520 in words is "thirteen billion, two hundred fifty-two million, five hundred seventy-one thousand, five hundred twenty".