225225555100 has 216 divisors, whose sum is σ = 613043658528. Its totient is φ = 71189798400.

The previous prime is 225225555067. The next prime is 225225555103. The reversal of 225225555100 is 1555522522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225225555103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65035969 + ... + 65039431.

Almost surely, 2^225225555100 is an apocalyptic number.

225225555100 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 225225555100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306521829264).

225225555100 is an abundant number, since it is smaller than the sum of its proper divisors (387818103428).

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

225225555100 is a wasteful number, since it uses less digits than its factorization.

225225555100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4525 (or 4511 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 34.

The spelling of 225225555100 in words is "two hundred twenty-five billion, two hundred twenty-five million, five hundred fifty-five thousand, one hundred".