779880425 has 24 divisors (see below), whose sum is σ = 1001554200. Its totient is φ = 602035200.

The previous prime is 779880419. The next prime is 779880443. The reversal of 779880425 is 524088977.

It can be written as a sum of positive squares in 12 ways, for example, as 514972249 + 264908176 = 22693^2 + 16276^2 .

It is not a de Polignac number, because 779880425 - 2⁸ = 779880169 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 76001 + ... + 85649.

It is an arithmetic number, because the mean of its divisors is an integer number (41731425).

Almost surely, 2^779880425 is an apocalyptic number.

It is an amenable number.

779880425 is a deficient number, since it is larger than the sum of its proper divisors (221673775).

779880425 is a wasteful number, since it uses less digits than its factorization.

779880425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9773 (or 9768 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 779880425 is about 27926.3392695856. The cubic root of 779880425 is about 920.4693670658.

The spelling of 779880425 in words is "seven hundred seventy-nine million, eight hundred eighty thousand, four hundred twenty-five".