225578016 has 36 divisors (see below), whose sum is σ = 641488302. Its totient is φ = 75192576.

The previous prime is 225577991. The next prime is 225578033. The reversal of 225578016 is 610875522.

It is a happy number.

225578016 is a `hidden beast` number, since 22 + 557 + 80 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 218921616 + 6656400 = 14796^2 + 2580^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 391341 + ... + 391916.

Almost surely, 2^225578016 is an apocalyptic number.

It is an amenable number.

225578016 is an abundant number, since it is smaller than the sum of its proper divisors (415910286).

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

225578016 is a wasteful number, since it uses less digits than its factorization.

225578016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783273 (or 783262 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 225578016 is about 15019.2548417024. The cubic root of 225578016 is about 608.7405853160.

The spelling of 225578016 in words is "two hundred twenty-five million, five hundred seventy-eight thousand, sixteen".