228225 has 24 divisors (see below), whose sum is σ = 401760. Its totient is φ = 113920.

The previous prime is 228223. The next prime is 228233. The reversal of 228225 is 522822.

It is not a de Polignac number, because 228225 - 2¹ = 228223 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1186 + ... + 1364.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2²²⁸²²⁵ is an apocalyptic number.

228225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

228225 is a deficient number, since it is larger than the sum of its proper divisors (173535).

228225 is a wasteful number, since it uses less digits than its factorization.

228225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 204 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 228225 is about 477.7290026783. The cubic root of 228225 is about 61.1112366083. Note that the first 3 decimals are identical.

The spelling of 228225 in words is "two hundred twenty-eight thousand, two hundred twenty-five".