659654725 has 12 divisors (see below), whose sum is σ = 820933444. Its totient is φ = 525813120.

The previous prime is 659654719. The next prime is 659654741. The reversal of 659654725 is 527456956.

It can be written as a sum of positive squares in 6 ways, for example, as 202293729 + 457360996 = 14223^2 + 21386^2 .

It is not a de Polignac number, because 659654725 - 2³ = 659654717 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

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, 40704 + ... + 54553.

Almost surely, 2^659654725 is an apocalyptic number.

It is an amenable number.

659654725 is a deficient number, since it is larger than the sum of its proper divisors (161278719).

659654725 is a wasteful number, since it uses less digits than its factorization.

659654725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95544 (or 95539 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 49.

The square root of 659654725 is about 25683.7443726572. The cubic root of 659654725 is about 870.5069160145.

The spelling of 659654725 in words is "six hundred fifty-nine million, six hundred fifty-four thousand, seven hundred twenty-five".