679635425 has 48 divisors (see below), whose sum is σ = 1012589952. Its totient is φ = 442713600.

The previous prime is 679635421. The next prime is 679635433. The reversal of 679635425 is 524536976.

It is not a de Polignac number, because 679635425 - 2² = 679635421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 679635425.

It is not an unprimeable number, because it can be changed into a prime (679635421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277205 + ... + 279645.

It is an arithmetic number, because the mean of its divisors is an integer number (21095624).

Almost surely, 2^679635425 is an apocalyptic number.

It is an amenable number.

679635425 is a deficient number, since it is larger than the sum of its proper divisors (332954527).

679635425 is a wasteful number, since it uses less digits than its factorization.

679635425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538 (or 2533 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 47.

The square root of 679635425 is about 26069.8182770805. The cubic root of 679635425 is about 879.2087520066.

The spelling of 679635425 in words is "six hundred seventy-nine million, six hundred thirty-five thousand, four hundred twenty-five".