225038660 has 96 divisors (see below), whose sum is σ = 620282880. Its totient is φ = 66441600.

The previous prime is 225038659. The next prime is 225038677. The reversal of 225038660 is 66830522.

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 31 ways as a sum of consecutive naturals, for example, 25415 + ... + 33105.

It is an arithmetic number, because the mean of its divisors is an integer number (6461280).

Almost surely, 2^225038660 is an apocalyptic number.

225038660 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 225038660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310141440).

225038660 is an abundant number, since it is smaller than the sum of its proper divisors (395244220).

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

225038660 is a wasteful number, since it uses less digits than its factorization.

225038660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7737 (or 7735 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 225038660 is about 15001.2886113160. The cubic root of 225038660 is about 608.2550328111.

The spelling of 225038660 in words is "two hundred twenty-five million, thirty-eight thousand, six hundred sixty".