1312717825 has 12 divisors (see below), whose sum is σ = 1628316540. Its totient is φ = 1049821760.

The previous prime is 1312717823. The next prime is 1312717843. The reversal of 1312717825 is 5287172131.

It can be written as a sum of positive squares in 6 ways, for example, as 506385009 + 806332816 = 22503^2 + 28396^2 .

It is not a de Polignac number, because 1312717825 - 2¹ = 1312717823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312717823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88011 + ... + 101839.

It is an arithmetic number, because the mean of its divisors is an integer number (135693045).

Almost surely, 2^1312717825 is an apocalyptic number.

It is an amenable number.

1312717825 is a deficient number, since it is larger than the sum of its proper divisors (315598715).

1312717825 is a wasteful number, since it uses less digits than its factorization.

1312717825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17636 (or 17631 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 1312717825 is about 36231.4480113616. The cubic root of 1312717825 is about 1094.9403510664.

Adding to 1312717825 its reverse (5287172131), we get a palindrome (6599889956).

The spelling of 1312717825 in words is "one billion, three hundred twelve million, seven hundred seventeen thousand, eight hundred twenty-five".