917250639725 has 12 divisors (see below), whose sum is σ = 1299875192544. Its totient is φ = 628971867120.

The previous prime is 917250639719. The next prime is 917250639727. The reversal of 917250639725 is 527936052719.

It is not a de Polignac number, because 917250639725 - 2³⁰ = 916176897901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917250639727) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2620715939 + ... + 2620716288.

It is an arithmetic number, because the mean of its divisors is an integer number (108322932712).

Almost surely, 2^917250639725 is an apocalyptic number.

It is an amenable number.

917250639725 is a deficient number, since it is larger than the sum of its proper divisors (382624552819).

917250639725 is a wasteful number, since it uses less digits than its factorization.

917250639725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241432244 (or 5241432239 counting only the distinct ones).

The product of its (nonzero) digits is 7144200, while the sum is 56.

The spelling of 917250639725 in words is "nine hundred seventeen billion, two hundred fifty million, six hundred thirty-nine thousand, seven hundred twenty-five".