656525 has 6 divisors (see below), whose sum is σ = 814122. Its totient is φ = 525200.

The previous prime is 656519. The next prime is 656527. The reversal of 656525 is 525656.

It can be written as a sum of positive squares in 3 ways, for example, as 6889 + 649636 = 83^2 + 806^2 .

It is not a de Polignac number, because 656525 - 2¹² = 652429 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656525.

It is not an unprimeable number, because it can be changed into a prime (656527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13106 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (135687).

2⁶⁵⁶⁵²⁵ is an apocalyptic number.

It is an amenable number.

656525 is a deficient number, since it is larger than the sum of its proper divisors (157597).

656525 is a wasteful number, since it uses less digits than its factorization.

656525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26271 (or 26266 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 656525 is about 810.2623032080. The cubic root of 656525 is about 86.9128029328.

The spelling of 656525 in words is "six hundred fifty-six thousand, five hundred twenty-five".