12505515112512 has 84 divisors (see below), whose sum is σ = 36199700319276. Its totient is φ = 4127232691200.

The previous prime is 12505515112481. The next prime is 12505515112589. The reversal of 12505515112512 is 21521151550521.

12505515112512 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 5 + 515 + 1 + 125 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6946935575616 + 5558579536896 = 2635704^2 + 2357664^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107421843 + ... + 107538194.

Almost surely, 2^{12505515112512} is an apocalyptic number.

12505515112512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12505515112512 is an abundant number, since it is smaller than the sum of its proper divisors (23694185206764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12505515112512 is a wasteful number, since it uses less digits than its factorization.

12505515112512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214960156 (or 214960143 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 36.

The spelling of 12505515112512 in words is "twelve trillion, five hundred five billion, five hundred fifteen million, one hundred twelve thousand, five hundred twelve".