679811225 has 6 divisors (see below), whose sum is σ = 842965950. Its totient is φ = 543848960.

The previous prime is 679811221. The next prime is 679811233. The reversal of 679811225 is 522118976.

It can be written as a sum of positive squares in 3 ways, for example, as 11485321 + 668325904 = 3389^2 + 25852^2 .

It is not a de Polignac number, because 679811225 - 2² = 679811221 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679811221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13596200 + ... + 13596249.

It is an arithmetic number, because the mean of its divisors is an integer number (140494325).

Almost surely, 2^679811225 is an apocalyptic number.

It is an amenable number.

679811225 is a deficient number, since it is larger than the sum of its proper divisors (163154725).

679811225 is a wasteful number, since it uses less digits than its factorization.

679811225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27192459 (or 27192454 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 679811225 is about 26073.1897741722. The cubic root of 679811225 is about 879.2845532219.

The spelling of 679811225 in words is "six hundred seventy-nine million, eight hundred eleven thousand, two hundred twenty-five".