13431363525 has 72 divisors (see below), whose sum is σ = 24839553024. Its totient is φ = 6932476800.

The previous prime is 13431363523. The next prime is 13431363527. The reversal of 13431363525 is 52536313431.

13431363525 is a `hidden beast` number, since 1 + 3 + 4 + 3 + 13 + 635 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (13431363523) and next prime (13431363527).

It is not a de Polignac number, because 13431363525 - 2¹ = 13431363523 is a prime.

It is a super-2 number, since 2×13431363525² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13431363525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13431363523) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1585852 + ... + 1594298.

It is an arithmetic number, because the mean of its divisors is an integer number (344993792).

Almost surely, 2^13431363525 is an apocalyptic number.

13431363525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13431363525 is a deficient number, since it is larger than the sum of its proper divisors (11408189499).

13431363525 is a wasteful number, since it uses less digits than its factorization.

13431363525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8691 (or 8683 counting only the distinct ones).

The product of its digits is 97200, while the sum is 36.

Adding to 13431363525 its reverse (52536313431), we get a palindrome (65967676956).

The spelling of 13431363525 in words is "thirteen billion, four hundred thirty-one million, three hundred sixty-three thousand, five hundred twenty-five".