655225 has 6 divisors (see below), whose sum is σ = 812510. Its totient is φ = 524160.

The previous prime is 655223. The next prime is 655229. The reversal of 655225 is 522556.

It can be written as a sum of positive squares in 3 ways, for example, as 21609 + 633616 = 147^2 + 796^2 .

It is not a de Polignac number, because 655225 - 2¹ = 655223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 26209 = 655225 / (6 + 5 + 5 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 655225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13080 + ... + 13129.

2⁶⁵⁵²²⁵ is an apocalyptic number.

It is an amenable number.

655225 is a deficient number, since it is larger than the sum of its proper divisors (157285).

655225 is a wasteful number, since it uses less digits than its factorization.

655225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26219 (or 26214 counting only the distinct ones).

The product of its digits is 3000, while the sum is 25.

The square root of 655225 is about 809.4596963407. The cubic root of 655225 is about 86.8553990249.

The spelling of 655225 in words is "six hundred fifty-five thousand, two hundred twenty-five".