225245120 has 56 divisors (see below), whose sum is σ = 537722064. Its totient is φ = 89870336.

The previous prime is 225245113. The next prime is 225245131. The reversal of 225245120 is 21542522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189167 + ... + 190353.

Almost surely, 2^225245120 is an apocalyptic number.

225245120 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 225245120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268861032).

225245120 is an abundant number, since it is smaller than the sum of its proper divisors (312476944).

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

225245120 is a wasteful number, since it uses less digits than its factorization.

225245120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797 (or 1787 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 225245120 is about 15008.1684425515. The cubic root of 225245120 is about 608.4409889329.

Adding to 225245120 its reverse (21542522), we get a palindrome (246787642).

The spelling of 225245120 in words is "two hundred twenty-five million, two hundred forty-five thousand, one hundred twenty".