220225220 has 24 divisors (see below), whose sum is σ = 462936600. Its totient is φ = 88001792.

The previous prime is 220225183. The next prime is 220225237. The reversal of 220225220 is 22522022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5837056 + 214388164 = 2416^2 + 14642^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17216 + ... + 27144.

It is an arithmetic number, because the mean of its divisors is an integer number (19289025).

Almost surely, 2^220225220 is an apocalyptic number.

220225220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220225220 is an abundant number, since it is smaller than the sum of its proper divisors (242711380).

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

220225220 is a wasteful number, since it uses less digits than its factorization.

220225220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11047 (or 11045 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 220225220 is about 14839.9871967600. The cubic root of 220225220 is about 603.8870050163.

Adding to 220225220 its reverse (22522022), we get a palindrome (242747242).

The spelling of 220225220 in words is "two hundred twenty million, two hundred twenty-five thousand, two hundred twenty".