13144031525 has 24 divisors (see below), whose sum is σ = 17514950400. Its totient is φ = 9748949760.

The previous prime is 13144031521. The next prime is 13144031561. The reversal of 13144031525 is 52513044131.

It is not a de Polignac number, because 13144031525 - 2² = 13144031521 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144031521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202325 + ... + 259274.

It is an arithmetic number, because the mean of its divisors is an integer number (729789600).

Almost surely, 2^13144031525 is an apocalyptic number.

It is an amenable number.

13144031525 is a deficient number, since it is larger than the sum of its proper divisors (4370918875).

13144031525 is a wasteful number, since it uses less digits than its factorization.

13144031525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461693 (or 461688 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 13144031525 its reverse (52513044131), we get a palindrome (65657075656).

The spelling of 13144031525 in words is "thirteen billion, one hundred forty-four million, thirty-one thousand, five hundred twenty-five".