13215536563525 has 36 divisors (see below), whose sum is σ = 17382059724000. Its totient is φ = 9965652665760.

The previous prime is 13215536563513. The next prime is 13215536563549. The reversal of 13215536563525 is 52536563551231.

It is a de Polignac number, because none of the positive numbers 2^k-13215536563525 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1883235 + ... + 5475184.

Almost surely, 2^{13215536563525} is an apocalyptic number.

It is an amenable number.

13215536563525 is a deficient number, since it is larger than the sum of its proper divisors (4166523160475).

13215536563525 is a wasteful number, since it uses less digits than its factorization.

13215536563525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7358666 (or 7358642 counting only the distinct ones).

The product of its digits is 12150000, while the sum is 52.

The spelling of 13215536563525 in words is "thirteen trillion, two hundred fifteen billion, five hundred thirty-six million, five hundred sixty-three thousand, five hundred twenty-five".