791660425 has 12 divisors (see below), whose sum is σ = 983603340. Its totient is φ = 632073920.

The previous prime is 791660383. The next prime is 791660447. The reversal of 791660425 is 524066197.

It can be written as a sum of positive squares in 6 ways, for example, as 54700816 + 736959609 = 7396^2 + 27147^2 .

It is not a de Polignac number, because 791660425 - 2⁷ = 791660297 is a prime.

It is a super-2 number, since 2×791660425² = 1253452457022361250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18382 + ... + 43831.

It is an arithmetic number, because the mean of its divisors is an integer number (81966945).

Almost surely, 2^791660425 is an apocalyptic number.

It is an amenable number.

791660425 is a deficient number, since it is larger than the sum of its proper divisors (191942915).

791660425 is a wasteful number, since it uses less digits than its factorization.

791660425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62732 (or 62727 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 791660425 is about 28136.4607760109. The cubic root of 791660425 is about 925.0807526287.

The spelling of 791660425 in words is "seven hundred ninety-one million, six hundred sixty thousand, four hundred twenty-five".