225702090 has 48 divisors (see below), whose sum is σ = 597910248. Its totient is φ = 59050368.

The previous prime is 225702077. The next prime is 225702167. The reversal of 225702090 is 90207522.

It is a happy number.

225702090 is a `hidden beast` number, since 2 + 2 + 570 + 2 + 0 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 221503689 + 4198401 = 14883^2 + 2049^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18889 + ... + 28428.

Almost surely, 2^225702090 is an apocalyptic number.

225702090 is an abundant number, since it is smaller than the sum of its proper divisors (372208158).

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

225702090 is a wasteful number, since it uses less digits than its factorization.

225702090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47383 (or 47380 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 225702090 is about 15023.3847717483. The cubic root of 225702090 is about 608.8521727796.

The spelling of 225702090 in words is "two hundred twenty-five million, seven hundred two thousand, ninety".