225228290 has 16 divisors (see below), whose sum is σ = 463326912. Its totient is φ = 77221104.

The previous prime is 225228271. The next prime is 225228313. The reversal of 225228290 is 92822522.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1608704 + ... + 1608843.

It is an arithmetic number, because the mean of its divisors is an integer number (28957932).

Almost surely, 2^225228290 is an apocalyptic number.

225228290 is an abundant number, since it is smaller than the sum of its proper divisors (238098622).

225228290 is a wasteful number, since it uses less digits than its factorization.

225228290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217561.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 225228290 is about 15007.6077374110. The cubic root of 225228290 is about 608.4258346025.

The spelling of 225228290 in words is "two hundred twenty-five million, two hundred twenty-eight thousand, two hundred ninety".