13531555025 has 48 divisors (see below), whose sum is σ = 18454675968. Its totient is φ = 9797760000.

The previous prime is 13531555021. The next prime is 13531555043. The reversal of 13531555025 is 52055513531.

It is not a de Polignac number, because 13531555025 - 2² = 13531555021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531555021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2144375 + ... + 2150675.

It is an arithmetic number, because the mean of its divisors is an integer number (384472416).

Almost surely, 2^13531555025 is an apocalyptic number.

It is an amenable number.

13531555025 is a deficient number, since it is larger than the sum of its proper divisors (4923120943).

13531555025 is a wasteful number, since it uses less digits than its factorization.

13531555025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6522 (or 6517 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 13531555025 in words is "thirteen billion, five hundred thirty-one million, five hundred fifty-five thousand, twenty-five".