12777912125 has 32 divisors (see below), whose sum is σ = 17409330432. Its totient is φ = 9286200000.

The previous prime is 12777912089. The next prime is 12777912163. The reversal of 12777912125 is 52121977721.

It is not a de Polignac number, because 12777912125 - 2⁸ = 12777911869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2578400 + ... + 2583350.

It is an arithmetic number, because the mean of its divisors is an integer number (544041576).

Almost surely, 2^12777912125 is an apocalyptic number.

It is an amenable number.

12777912125 is a deficient number, since it is larger than the sum of its proper divisors (4631418307).

12777912125 is a wasteful number, since it uses less digits than its factorization.

12777912125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6854 (or 6844 counting only the distinct ones).

The product of its digits is 123480, while the sum is 44.

The spelling of 12777912125 in words is "twelve billion, seven hundred seventy-seven million, nine hundred twelve thousand, one hundred twenty-five".