220225152 has 64 divisors (see below), whose sum is σ = 668548800. Its totient is φ = 62920704.

The previous prime is 220225133. The next prime is 220225163. The reversal of 220225152 is 251522022.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 38277 + ... + 43652.

It is an arithmetic number, because the mean of its divisors is an integer number (10446075).

Almost surely, 2^220225152 is an apocalyptic number.

It is an amenable number.

220225152 is an abundant number, since it is smaller than the sum of its proper divisors (448323648).

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

220225152 is an equidigital number, since it uses as much as digits as its factorization.

220225152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81953 (or 81941 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 220225152 is about 14839.9849056527. The cubic root of 220225152 is about 603.8869428613.

Adding to 220225152 its reverse (251522022), we get a palindrome (471747174).

The spelling of 220225152 in words is "two hundred twenty million, two hundred twenty-five thousand, one hundred fifty-two".