1312635325 has 24 divisors (see below), whose sum is σ = 1683035136. Its totient is φ = 1014504000.

The previous prime is 1312635319. The next prime is 1312635341. The reversal of 1312635325 is 5235362131.

It is not a de Polignac number, because 1312635325 - 2¹¹ = 1312633277 is a prime.

It is a super-2 number, since 2×1312635325² = 3446022992875711250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635244 + ... + 637306.

It is an arithmetic number, because the mean of its divisors is an integer number (70126464).

Almost surely, 2^1312635325 is an apocalyptic number.

It is an amenable number.

1312635325 is a deficient number, since it is larger than the sum of its proper divisors (370399811).

1312635325 is a wasteful number, since it uses less digits than its factorization.

1312635325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2925 (or 2920 counting only the distinct ones).

The product of its digits is 16200, while the sum is 31.

The square root of 1312635325 is about 36230.3094797712. The cubic root of 1312635325 is about 1094.9174127853.

Adding to 1312635325 its reverse (5235362131), we get a palindrome (6547997456).

The spelling of 1312635325 in words is "one billion, three hundred twelve million, six hundred thirty-five thousand, three hundred twenty-five".