225043136 has 42 divisors (see below), whose sum is σ = 461566260. Its totient is φ = 108862080.

The previous prime is 225043079. The next prime is 225043153. The reversal of 225043136 is 631340522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59675 + ... + 63333.

Almost surely, 2^225043136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225043136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230783130).

225043136 is an abundant number, since it is smaller than the sum of its proper divisors (236523124).

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

225043136 is an equidigital number, since it uses as much as digits as its factorization.

225043136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733 (or 3692 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 225043136 is about 15001.4377977579. The cubic root of 225043136 is about 608.2590654982.

Adding to 225043136 its reverse (631340522), we get a palindrome (856383658).

The spelling of 225043136 in words is "two hundred twenty-five million, forty-three thousand, one hundred thirty-six".