779668125 has 20 divisors (see below), whose sum is σ = 1299034176. Its totient is φ = 415822000.

The previous prime is 779668069. The next prime is 779668129. The reversal of 779668125 is 521866977.

It is not a de Polignac number, because 779668125 - 2⁶ = 779668061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779668129) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 206037 + ... + 209786.

Almost surely, 2^779668125 is an apocalyptic number.

779668125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

779668125 is a deficient number, since it is larger than the sum of its proper divisors (519366051).

779668125 is an equidigital number, since it uses as much as digits as its factorization.

779668125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415846 (or 415831 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 51.

The square root of 779668125 is about 27922.5379398077. The cubic root of 779668125 is about 920.3858357213.

The spelling of 779668125 in words is "seven hundred seventy-nine million, six hundred sixty-eight thousand, one hundred twenty-five".