1317195725 has 12 divisors (see below), whose sum is σ = 1673161140. Its totient is φ = 1028054400.

The previous prime is 1317195713. The next prime is 1317195731. The reversal of 1317195725 is 5275917131.

It can be written as a sum of positive squares in 6 ways, for example, as 680844649 + 636351076 = 26093^2 + 25226^2 .

It is not a de Polignac number, because 1317195725 - 2¹⁰ = 1317194701 is a prime.

It is a hoax number, since the sum of its digits (41) 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 (41).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 641510 + ... + 643559.

It is an arithmetic number, because the mean of its divisors is an integer number (139430095).

Almost surely, 2^1317195725 is an apocalyptic number.

It is an amenable number.

1317195725 is a deficient number, since it is larger than the sum of its proper divisors (355965415).

1317195725 is a wasteful number, since it uses less digits than its factorization.

1317195725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285120 (or 1285115 counting only the distinct ones).

The product of its digits is 66150, while the sum is 41.

The square root of 1317195725 is about 36293.1911658372. The cubic root of 1317195725 is about 1096.1839463067.

The spelling of 1317195725 in words is "one billion, three hundred seventeen million, one hundred ninety-five thousand, seven hundred twenty-five".