225638360 has 32 divisors (see below), whose sum is σ = 511695360. Its totient is φ = 89542656.

The previous prime is 225638351. The next prime is 225638377. The reversal of 225638360 is 63836522.

It is a self number, because there is not a number n which added to its sum of digits gives 225638360.

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, 17129 + ... + 27288.

It is an arithmetic number, because the mean of its divisors is an integer number (15990480).

Almost surely, 2^225638360 is an apocalyptic number.

225638360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225638360 is an abundant number, since it is smaller than the sum of its proper divisors (286057000).

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

225638360 is a wasteful number, since it uses less digits than its factorization.

225638360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44555 (or 44551 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 225638360 is about 15021.2635953171. The cubic root of 225638360 is about 608.7948615371.

The spelling of 225638360 in words is "two hundred twenty-five million, six hundred thirty-eight thousand, three hundred sixty".