225204125100 has 144 divisors (see below), whose sum is σ = 680309790720. Its totient is φ = 57410496000.

The previous prime is 225204125089. The next prime is 225204125173. The reversal of 225204125100 is 1521402522.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13453536 + ... + 13470264.

Almost surely, 2^225204125100 is an apocalyptic number.

225204125100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225204125100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340154895360).

225204125100 is an abundant number, since it is smaller than the sum of its proper divisors (455105665620).

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

225204125100 is a wasteful number, since it uses less digits than its factorization.

225204125100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18720 (or 18713 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 225204125100 its reverse (1521402522), we get a palindrome (226725527622).

The spelling of 225204125100 in words is "two hundred twenty-five billion, two hundred four million, one hundred twenty-five thousand, one hundred".