225613032500 has 30 divisors (see below), whose sum is σ = 493370584938. Its totient is φ = 90245212000.

The previous prime is 225613032479. The next prime is 225613032503. The reversal of 225613032500 is 5230316522.

It can be written as a sum of positive squares in 5 ways, for example, as 22525807396 + 203087225104 = 150086^2 + 450652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225613032503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 45120107 + ... + 45125106.

Almost surely, 2^225613032500 is an apocalyptic number.

225613032500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225613032500 is an abundant number, since it is smaller than the sum of its proper divisors (267757552438).

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

225613032500 is an equidigital number, since it uses as much as digits as its factorization.

225613032500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90245237 (or 90245220 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The spelling of 225613032500 in words is "two hundred twenty-five billion, six hundred thirteen million, thirty-two thousand, five hundred".