225253220 has 12 divisors (see below), whose sum is σ = 473031804. Its totient is φ = 90101280.

The previous prime is 225253211. The next prime is 225253241. The reversal of 225253220 is 22352522.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 46977316 + 178275904 = 6854^2 + 13352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5631311 + ... + 5631350.

It is an arithmetic number, because the mean of its divisors is an integer number (39419317).

Almost surely, 2^225253220 is an apocalyptic number.

225253220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225253220 is an abundant number, since it is smaller than the sum of its proper divisors (247778584).

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

225253220 is a wasteful number, since it uses less digits than its factorization.

225253220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262670 (or 11262668 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 225253220 is about 15008.4382931736. The cubic root of 225253220 is about 608.4482821918.

The spelling of 225253220 in words is "two hundred twenty-five million, two hundred fifty-three thousand, two hundred twenty".