1312725886 has 36 divisors (see below), whose sum is σ = 2087470224. Its totient is φ = 618847200.

The previous prime is 1312725877. The next prime is 1312725937. The reversal of 1312725886 is 6885272131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12997236 + ... + 12997336.

It is an arithmetic number, because the mean of its divisors is an integer number (57985284).

Almost surely, 2^1312725886 is an apocalyptic number.

1312725886 is a deficient number, since it is larger than the sum of its proper divisors (774744338).

1312725886 is an equidigital number, since it uses as much as digits as its factorization.

1312725886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 187 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 1312725886 is about 36231.5592543296. The cubic root of 1312725886 is about 1094.9425922935.

The spelling of 1312725886 in words is "one billion, three hundred twelve million, seven hundred twenty-five thousand, eight hundred eighty-six".