655825 has 12 divisors (see below), whose sum is σ = 836380. Its totient is φ = 509760.

The previous prime is 655807. The next prime is 655847. The reversal of 655825 is 528556.

It can be written as a sum of positive squares in 6 ways, for example, as 9409 + 646416 = 97^2 + 804^2 .

It is not a de Polignac number, because 655825 - 2¹¹ = 653777 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 571 + ... + 1279.

2⁶⁵⁵⁸²⁵ is an apocalyptic number.

It is an amenable number.

655825 is a deficient number, since it is larger than the sum of its proper divisors (180555).

655825 is a wasteful number, since it uses less digits than its factorization.

655825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 751 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 655825 is about 809.8302291221. The cubic root of 655825 is about 86.8819025622.

The spelling of 655825 in words is "six hundred fifty-five thousand, eight hundred twenty-five".