225656 has 16 divisors (see below), whose sum is σ = 430440. Its totient is φ = 110880.

The previous prime is 225637. The next prime is 225671. The reversal of 225656 is 656522.

It is a happy number.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

225656 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326 + ... + 746.

2²²⁵⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

225656 is a deficient number, since it is larger than the sum of its proper divisors (204784).

225656 is a wasteful number, since it uses less digits than its factorization.

225656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 490 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 225656 is about 475.0326304582. The cubic root of 225656 is about 60.8810725952.

The spelling of 225656 in words is "two hundred twenty-five thousand, six hundred fifty-six".