13531015225 has 24 divisors (see below), whose sum is σ = 20650414400. Its totient is φ = 8564685120.

The previous prime is 13531015213. The next prime is 13531015247. The reversal of 13531015225 is 52251013531.

It is not a de Polignac number, because 13531015225 - 2⁵ = 13531015193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13531015193 and 13531015202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2971575 + ... + 2976124.

Almost surely, 2^13531015225 is an apocalyptic number.

It is an amenable number.

13531015225 is a deficient number, since it is larger than the sum of its proper divisors (7119399175).

13531015225 is a wasteful number, since it uses less digits than its factorization.

13531015225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947729 (or 5947724 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 13531015225 its reverse (52251013531), we get a palindrome (65782028756).

The spelling of 13531015225 in words is "thirteen billion, five hundred thirty-one million, fifteen thousand, two hundred twenty-five".