317889725 has 12 divisors (see below), whose sum is σ = 395725044. Its totient is φ = 253317120.

The previous prime is 317889683. The next prime is 317889797. The reversal of 317889725 is 527988713.

It can be written as a sum of positive squares in 6 ways, for example, as 586756 + 317302969 = 766^2 + 17813^2 .

It is not a de Polignac number, because 317889725 - 2¹² = 317885629 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 18314 + ... + 31163.

It is an arithmetic number, because the mean of its divisors is an integer number (32977087).

Almost surely, 2^317889725 is an apocalyptic number.

It is an amenable number.

317889725 is a deficient number, since it is larger than the sum of its proper divisors (77835319).

317889725 is a wasteful number, since it uses less digits than its factorization.

317889725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49744 (or 49739 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The square root of 317889725 is about 17829.4622745612. The cubic root of 317889725 is about 682.4835116126.

The spelling of 317889725 in words is "three hundred seventeen million, eight hundred eighty-nine thousand, seven hundred twenty-five".