13531322425 has 12 divisors (see below), whose sum is σ = 17357421420. Its totient is φ = 10451779520.

The previous prime is 13531322417. The next prime is 13531322471. The reversal of 13531322425 is 52422313531.

It can be written as a sum of positive squares in 6 ways, for example, as 710968896 + 12820353529 = 26664^2 + 113227^2 .

It is not a de Polignac number, because 13531322425 - 2³ = 13531322417 is a prime.

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, 9331222 + ... + 9332671.

It is an arithmetic number, because the mean of its divisors is an integer number (1446451785).

Almost surely, 2^13531322425 is an apocalyptic number.

It is an amenable number.

13531322425 is a deficient number, since it is larger than the sum of its proper divisors (3826098995).

13531322425 is a wasteful number, since it uses less digits than its factorization.

13531322425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18663932 (or 18663927 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

Adding to 13531322425 its reverse (52422313531), we get a palindrome (65953635956).

The spelling of 13531322425 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-two thousand, four hundred twenty-five".