859599225 has 18 divisors (see below), whose sum is σ = 1539638126. Its totient is φ = 458452800.

The previous prime is 859599193. The next prime is 859599233. The reversal of 859599225 is 522995958.

It can be written as a sum of positive squares in 3 ways, for example, as 129140496 + 730458729 = 11364^2 + 27027^2 .

It is not a de Polignac number, because 859599225 - 2⁵ = 859599193 is a prime.

It is a Duffinian number.

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 17 ways as a sum of consecutive naturals, for example, 1909996 + ... + 1910445.

Almost surely, 2^859599225 is an apocalyptic number.

It is an amenable number.

859599225 is a deficient number, since it is larger than the sum of its proper divisors (680038901).

859599225 is a wasteful number, since it uses less digits than its factorization.

859599225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820457 (or 3820449 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The square root of 859599225 is about 29318.9226439172. The cubic root of 859599225 is about 950.8207957105.

The spelling of 859599225 in words is "eight hundred fifty-nine million, five hundred ninety-nine thousand, two hundred twenty-five".