13531130525 has 18 divisors (see below), whose sum is σ = 18442599546. Its totient is φ = 9840820000.

The previous prime is 13531130519. The next prime is 13531130531. The reversal of 13531130525 is 52503113531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13531130519) and next prime (13531130531).

It can be written as a sum of positive squares in 3 ways, for example, as 256864729 + 13274265796 = 16027^2 + 115214^2 .

It is not a de Polignac number, because 13531130525 - 2⁶ = 13531130461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2233526 + ... + 2239575.

Almost surely, 2^13531130525 is an apocalyptic number.

It is an amenable number.

13531130525 is a deficient number, since it is larger than the sum of its proper divisors (4911469021).

13531130525 is a wasteful number, since it uses less digits than its factorization.

13531130525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473133 (or 4473117 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 29.

The spelling of 13531130525 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty thousand, five hundred twenty-five".