225020220 has 24 divisors (see below), whose sum is σ = 630056784. Its totient is φ = 60005376.

The previous prime is 225020219. The next prime is 225020261. The reversal of 225020220 is 22020522.

225020220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 225020220.

It is a congruent number.

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, 1875109 + ... + 1875228.

It is an arithmetic number, because the mean of its divisors is an integer number (26252366).

Almost surely, 2^225020220 is an apocalyptic number.

225020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225020220 is an abundant number, since it is smaller than the sum of its proper divisors (405036564).

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

225020220 is a wasteful number, since it uses less digits than its factorization.

225020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3750349 (or 3750347 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 225020220 is about 15000.6739848581. The cubic root of 225020220 is about 608.2384185856.

Adding to 225020220 its reverse (22020522), we get a palindrome (247040742).

The spelling of 225020220 in words is "two hundred twenty-five million, twenty thousand, two hundred twenty".