655625 has 10 divisors (see below), whose sum is σ = 820050. Its totient is φ = 524000.

The previous prime is 655601. The next prime is 655637. The reversal of 655625 is 526556.

It can be written as a sum of positive squares in 5 ways, for example, as 118336 + 537289 = 344^2 + 733^2 .

It is a sliding number, since 655625 = 15625 + 640000 and 1/15625 + 1/640000 = 0.0000655625.

It is not a de Polignac number, because 655625 - 2⁶ = 655561 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 101 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (82005).

2⁶⁵⁵⁶²⁵ is an apocalyptic number.

It is an amenable number.

655625 is a deficient number, since it is larger than the sum of its proper divisors (164425).

655625 is an equidigital number, since it uses as much as digits as its factorization.

655625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1054 counting only the distinct ones).

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

The square root of 655625 is about 809.7067370351. The cubic root of 655625 is about 86.8730698465.

The spelling of 655625 in words is "six hundred fifty-five thousand, six hundred twenty-five".