225397500 has 120 divisors (see below), whose sum is σ = 674146704. Its totient is φ = 58560000.

The previous prime is 225397489. The next prime is 225397517. The reversal of 225397500 is 5793522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 307134 + ... + 307866.

Almost surely, 2^225397500 is an apocalyptic number.

225397500 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 225397500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337073352).

225397500 is an abundant number, since it is smaller than the sum of its proper divisors (448749204).

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

225397500 is a wasteful number, since it uses less digits than its factorization.

225397500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 784 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 225397500 is about 15013.2441530803. The cubic root of 225397500 is about 608.5781629569.

The spelling of 225397500 in words is "two hundred twenty-five million, three hundred ninety-seven thousand, five hundred".