225200420 has 12 divisors (see below), whose sum is σ = 472920924. Its totient is φ = 90080160.

The previous prime is 225200419. The next prime is 225200449. The reversal of 225200420 is 24002522.

It can be written as a sum of positive squares in 2 ways, for example, as 110838784 + 114361636 = 10528^2 + 10694^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5629991 + ... + 5630030.

It is an arithmetic number, because the mean of its divisors is an integer number (39410077).

Almost surely, 2^225200420 is an apocalyptic number.

225200420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225200420 is an abundant number, since it is smaller than the sum of its proper divisors (247720504).

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

225200420 is a wasteful number, since it uses less digits than its factorization.

225200420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11260030 (or 11260028 counting only the distinct ones).

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

The square root of 225200420 is about 15006.6791796187. The cubic root of 225200420 is about 608.4007378034.

Adding to 225200420 its reverse (24002522), we get a palindrome (249202942).

The spelling of 225200420 in words is "two hundred twenty-five million, two hundred thousand, four hundred twenty".