12515251312 has 40 divisors (see below), whose sum is σ = 24863564880. Its totient is φ = 6099141120.

The previous prime is 12515251283. The next prime is 12515251313. The reversal of 12515251312 is 21315251521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12515251313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 718903 + ... + 736105.

It is an arithmetic number, because the mean of its divisors is an integer number (621589122).

Almost surely, 2^12515251312 is an apocalyptic number.

It is an amenable number.

12515251312 is a deficient number, since it is larger than the sum of its proper divisors (12348313568).

12515251312 is a wasteful number, since it uses less digits than its factorization.

12515251312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18361 (or 18355 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The spelling of 12515251312 in words is "twelve billion, five hundred fifteen million, two hundred fifty-one thousand, three hundred twelve".