13531323325 has 12 divisors (see below), whose sum is σ = 18069521428. Its totient is φ = 9992361600.

The previous prime is 13531323307. The next prime is 13531323341. The reversal of 13531323325 is 52332313531.

It can be written as a sum of positive squares in 6 ways, for example, as 1277276121 + 12254047204 = 35739^2 + 110698^2 .

It is not a de Polignac number, because 13531323325 - 2⁵ = 13531323293 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 11 ways as a sum of consecutive naturals, for example, 20817096 + ... + 20817745.

Almost surely, 2^13531323325 is an apocalyptic number.

It is an amenable number.

13531323325 is a deficient number, since it is larger than the sum of its proper divisors (4538198103).

13531323325 is a wasteful number, since it uses less digits than its factorization.

13531323325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41634864 (or 41634859 counting only the distinct ones).

The product of its digits is 24300, while the sum is 31.

Adding to 13531323325 its reverse (52332313531), we get a palindrome (65863636856).

The spelling of 13531323325 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-three thousand, three hundred twenty-five".