225285 has 16 divisors (see below), whose sum is σ = 376704. Its totient is φ = 114752.

The previous prime is 225263. The next prime is 225287. The reversal of 225285 is 582522.

It is a cyclic number.

It is not a de Polignac number, because 225285 - 2⁶ = 225221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19 + ... + 671.

It is an arithmetic number, because the mean of its divisors is an integer number (23544).

2²²⁵²⁸⁵ is an apocalyptic number.

It is an amenable number.

225285 is a deficient number, since it is larger than the sum of its proper divisors (151419).

225285 is a wasteful number, since it uses less digits than its factorization.

225285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

The product of its digits is 1600, while the sum is 24.

The square root of 225285 is about 474.6419703313. The cubic root of 225285 is about 60.8476895289.

The spelling of 225285 in words is "two hundred twenty-five thousand, two hundred eighty-five".