13144975125 has 32 divisors (see below), whose sum is σ = 21920770560. Its totient is φ = 6995419200.

The previous prime is 13144975121. The next prime is 13144975139. The reversal of 13144975125 is 52157944131.

It is not a de Polignac number, because 13144975125 - 2² = 13144975121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144975121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135771 + ... + 211479.

It is an arithmetic number, because the mean of its divisors is an integer number (685024080).

Almost surely, 2^13144975125 is an apocalyptic number.

13144975125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13144975125 is a deficient number, since it is larger than the sum of its proper divisors (8775795435).

13144975125 is an equidigital number, since it uses as much as digits as its factorization.

13144975125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76190 (or 76180 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The spelling of 13144975125 in words is "thirteen billion, one hundred forty-four million, nine hundred seventy-five thousand, one hundred twenty-five".