12856725580 has 12 divisors (see below), whose sum is σ = 26999123760. Its totient is φ = 5142690224.

The previous prime is 12856725559. The next prime is 12856725589. The reversal of 12856725580 is 8552765821.

It is not an unprimeable number, because it can be changed into a prime (12856725589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321418120 + ... + 321418159.

It is an arithmetic number, because the mean of its divisors is an integer number (2249926980).

Almost surely, 2^12856725580 is an apocalyptic number.

12856725580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12856725580 is an abundant number, since it is smaller than the sum of its proper divisors (14142398180).

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

12856725580 is a wasteful number, since it uses less digits than its factorization.

12856725580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642836288 (or 642836286 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 12856725580 in words is "twelve billion, eight hundred fifty-six million, seven hundred twenty-five thousand, five hundred eighty".