225399078 has 64 divisors (see below), whose sum is σ = 534988800. Its totient is φ = 70187040.

The previous prime is 225399067. The next prime is 225399121. The reversal of 225399078 is 870993522.

225399078 is a `hidden beast` number, since 22 + 539 + 90 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46225 + ... + 50867.

It is an arithmetic number, because the mean of its divisors is an integer number (8359200).

Almost surely, 2^225399078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225399078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267494400).

225399078 is an abundant number, since it is smaller than the sum of its proper divisors (309589722).

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

225399078 is a wasteful number, since it uses less digits than its factorization.

225399078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714 (or 4708 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 225399078 is about 15013.2967065865. The cubic root of 225399078 is about 608.5795831650.

The spelling of 225399078 in words is "two hundred twenty-five million, three hundred ninety-nine thousand, seventy-eight".