203225220 has 96 divisors (see below), whose sum is σ = 689754240. Its totient is φ = 49265280.

The previous prime is 203225203. The next prime is 203225257. The reversal of 203225220 is 22522302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 203225193 and 203225202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11167 + ... + 23046.

It is an arithmetic number, because the mean of its divisors is an integer number (7184940).

Almost surely, 2^203225220 is an apocalyptic number.

203225220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203225220 is an abundant number, since it is smaller than the sum of its proper divisors (486529020).

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

203225220 is a wasteful number, since it uses less digits than its factorization.

203225220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34242 (or 34234 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 203225220 is about 14255.7083303496. The cubic root of 203225220 is about 587.9303332705.

Adding to 203225220 its reverse (22522302), we get a palindrome (225747522).

The spelling of 203225220 in words is "two hundred three million, two hundred twenty-five thousand, two hundred twenty".