225000220 has 12 divisors (see below), whose sum is σ = 472500504. Its totient is φ = 90000080.

The previous prime is 225000199. The next prime is 225000221. The reversal of 225000220 is 22000522.

It is a self number, because there is not a number n which added to its sum of digits gives 225000220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225000221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5624986 + ... + 5625025.

It is an arithmetic number, because the mean of its divisors is an integer number (39375042).

Almost surely, 2^225000220 is an apocalyptic number.

225000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225000220 is an abundant number, since it is smaller than the sum of its proper divisors (247500284).

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

225000220 is a wasteful number, since it uses less digits than its factorization.

225000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11250020 (or 11250018 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 225000220 is about 15000.0073333315. The cubic root of 225000220 is about 608.2203977920.

Adding to 225000220 its reverse (22000522), we get a palindrome (247000742).

The spelling of 225000220 in words is "two hundred twenty-five million, two hundred twenty", and thus it is an aban number.