225273290 has 64 divisors (see below), whose sum is σ = 471692160. Its totient is φ = 76554240.

The previous prime is 225273281. The next prime is 225273317. The reversal of 225273290 is 92372522.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334394 + ... + 335066.

It is an arithmetic number, because the mean of its divisors is an integer number (7370190).

Almost surely, 2^225273290 is an apocalyptic number.

225273290 is an abundant number, since it is smaller than the sum of its proper divisors (246418870).

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

225273290 is a wasteful number, since it uses less digits than its factorization.

225273290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 225273290 is about 15009.1069021444. The cubic root of 225273290 is about 608.4663525134.

The spelling of 225273290 in words is "two hundred twenty-five million, two hundred seventy-three thousand, two hundred ninety".