12959857125 has 48 divisors (see below), whose sum is σ = 24167959920. Its totient is φ = 6673564800.

The previous prime is 12959857091. The next prime is 12959857139. The reversal of 12959857125 is 52175895921.

12959857125 is a `hidden beast` number, since 1 + 29 + 598 + 5 + 7 + 1 + 25 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 5475704004 + 7484153121 = 73998^2 + 86511^2 .

It is not a de Polignac number, because 12959857125 - 2²⁷ = 12825639397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165994 + ... + 231243.

It is an arithmetic number, because the mean of its divisors is an integer number (503499165).

Almost surely, 2^12959857125 is an apocalyptic number.

12959857125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12959857125 is a deficient number, since it is larger than the sum of its proper divisors (11208102795).

12959857125 is a wasteful number, since it uses less digits than its factorization.

12959857125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397287 (or 397274 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 54.

The spelling of 12959857125 in words is "twelve billion, nine hundred fifty-nine million, eight hundred fifty-seven thousand, one hundred twenty-five".