225563250 has 128 divisors (see below), whose sum is σ = 646963200. Its totient is φ = 51768000.

The previous prime is 225563243. The next prime is 225563281. The reversal of 225563250 is 52365522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156031 + ... + 157469.

It is an arithmetic number, because the mean of its divisors is an integer number (5054400).

Almost surely, 2^225563250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225563250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323481600).

225563250 is an abundant number, since it is smaller than the sum of its proper divisors (421399950).

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

225563250 is a wasteful number, since it uses less digits than its factorization.

225563250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 225563250 is about 15018.7632646633. The cubic root of 225563250 is about 608.7273026096.

The spelling of 225563250 in words is "two hundred twenty-five million, five hundred sixty-three thousand, two hundred fifty".