225668 has 6 divisors (see below), whose sum is σ = 394926. Its totient is φ = 112832.

The previous prime is 225637. The next prime is 225671. The reversal of 225668 is 866522.

It can be written as a sum of positive squares in only one way, i.e., 200704 + 24964 = 448^2 + 158^2 .

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 225668.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28205 + ... + 28212.

It is an arithmetic number, because the mean of its divisors is an integer number (65821).

2²²⁵⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

225668 is a deficient number, since it is larger than the sum of its proper divisors (169258).

225668 is a wasteful number, since it uses less digits than its factorization.

225668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56421 (or 56419 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 225668 is about 475.0452610015. The cubic root of 225668 is about 60.8821517598.

The spelling of 225668 in words is "two hundred twenty-five thousand, six hundred sixty-eight".