6659311825 has 12 divisors (see below), whose sum is σ = 8743285260. Its totient is φ = 5014069760.

The previous prime is 6659311811. The next prime is 6659311861. The reversal of 6659311825 is 5281139566.

It can be written as a sum of positive squares in 6 ways, for example, as 396647056 + 6262664769 = 19916^2 + 79137^2 .

It is not a de Polignac number, because 6659311825 - 2⁷ = 6659311697 is a prime.

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, 7834060 + ... + 7834909.

It is an arithmetic number, because the mean of its divisors is an integer number (728607105).

Almost surely, 2^6659311825 is an apocalyptic number.

It is an amenable number.

6659311825 is a deficient number, since it is larger than the sum of its proper divisors (2083973435).

6659311825 is a wasteful number, since it uses less digits than its factorization.

6659311825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15668996 (or 15668991 counting only the distinct ones).

The product of its digits is 388800, while the sum is 46.

The square root of 6659311825 is about 81604.6066408018. The cubic root of 6659311825 is about 1881.3796859859.

The spelling of 6659311825 in words is "six billion, six hundred fifty-nine million, three hundred eleven thousand, eight hundred twenty-five".