13525303230521 has 4 divisors (see below), whose sum is σ = 13537565519232. Its totient is φ = 13513040941812.

The previous prime is 13525303230469. The next prime is 13525303230533. The reversal of 13525303230521 is 12503230352531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13525303230521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13525303230821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6131142701 + ... + 6131144906.

It is an arithmetic number, because the mean of its divisors is an integer number (3384391379808).

Almost surely, 2^{13525303230521} is an apocalyptic number.

It is an amenable number.

13525303230521 is a deficient number, since it is larger than the sum of its proper divisors (12262288711).

13525303230521 is a wasteful number, since it uses less digits than its factorization.

13525303230521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12262288710.

The product of its (nonzero) digits is 81000, while the sum is 35.

The spelling of 13525303230521 in words is "thirteen trillion, five hundred twenty-five billion, three hundred three million, two hundred thirty thousand, five hundred twenty-one".