13531125555 has 12 divisors (see below), whose sum is σ = 23453951040. Its totient is φ = 7216600272.

The previous prime is 13531125533. The next prime is 13531125563. The reversal of 13531125555 is 55552113531.

13531125555 is a `hidden beast` number, since 1 + 353 + 1 + 1 + 255 + 55 = 666.

It is not a de Polignac number, because 13531125555 - 2⁵ = 13531125523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150345795 + ... + 150345884.

It is an arithmetic number, because the mean of its divisors is an integer number (1954495920).

Almost surely, 2^13531125555 is an apocalyptic number.

13531125555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13531125555 is a deficient number, since it is larger than the sum of its proper divisors (9922825485).

13531125555 is a wasteful number, since it uses less digits than its factorization.

13531125555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300691690 (or 300691687 counting only the distinct ones).

The product of its digits is 56250, while the sum is 36.

The spelling of 13531125555 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-five thousand, five hundred fifty-five".