225890 has 24 divisors (see below), whose sum is σ = 474012. Its totient is φ = 77280.

The previous prime is 225889. The next prime is 225919. The reversal of 225890 is 98522.

225890 is digitally balanced in base 2, 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 2 ways, for example, as 219961 + 5929 = 469^2 + 77^2 .

It is an Ulam number.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260 + ... + 720.

2²²⁵⁸⁹⁰ is an apocalyptic number.

225890 is an abundant number, since it is smaller than the sum of its proper divisors (248122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225890 is a wasteful number, since it uses less digits than its factorization.

225890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 225890 is about 475.2788655095. The cubic root of 225890 is about 60.9021094086.

The spelling of 225890 in words is "two hundred twenty-five thousand, eight hundred ninety".