225812 has 6 divisors (see below), whose sum is σ = 395178. Its totient is φ = 112904.

The previous prime is 225809. The next prime is 225821. The reversal of 225812 is 218522.

225812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 198916 + 26896 = 446^2 + 164^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 225812.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28223 + ... + 28230.

It is an arithmetic number, because the mean of its divisors is an integer number (65863).

2²²⁵⁸¹² is an apocalyptic number.

It is an amenable number.

225812 is a deficient number, since it is larger than the sum of its proper divisors (169366).

225812 is a wasteful number, since it uses less digits than its factorization.

225812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56457 (or 56455 counting only the distinct ones).

The product of its digits is 320, while the sum is 20.

The square root of 225812 is about 475.1968013360. The cubic root of 225812 is about 60.8950987524.

The spelling of 225812 in words is "two hundred twenty-five thousand, eight hundred twelve".