1312513251325 has 12 divisors (see below), whose sum is σ = 1667211955668. Its totient is φ = 1024400585600.

The previous prime is 1312513251319. The next prime is 1312513251341. The reversal of 1312513251325 is 5231523152131.

It can be written as a sum of positive squares in 6 ways, for example, as 10639097316 + 1301874154009 = 103146^2 + 1140997^2 .

It is not a de Polignac number, because 1312513251325 - 2³ = 1312513251317 is a prime.

It is a super-2 number, since 2×1312513251325² (a number of 25 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 640249342 + ... + 640251391.

It is an arithmetic number, because the mean of its divisors is an integer number (138934329639).

Almost surely, 2^{1312513251325} is an apocalyptic number.

It is an amenable number.

1312513251325 is a deficient number, since it is larger than the sum of its proper divisors (354698704343).

1312513251325 is a wasteful number, since it uses less digits than its factorization.

1312513251325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280500784 (or 1280500779 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The spelling of 1312513251325 in words is "one trillion, three hundred twelve billion, five hundred thirteen million, two hundred fifty-one thousand, three hundred twenty-five".