13531125252 has 24 divisors (see below), whose sum is σ = 31584313600. Its totient is φ = 4508705376.

The previous prime is 13531125221. The next prime is 13531125277. The reversal of 13531125252 is 25252113531.

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, 174727 + ... + 239982.

Almost surely, 2^13531125252 is an apocalyptic number.

13531125252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13531125252 is an abundant number, since it is smaller than the sum of its proper divisors (18053188348).

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

13531125252 is a wasteful number, since it uses less digits than its factorization.

13531125252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417435 (or 417433 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

Adding to 13531125252 its reverse (25252113531), we get a palindrome (38783238783).

The spelling of 13531125252 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-five thousand, two hundred fifty-two".