225942636 has 24 divisors (see below), whose sum is σ = 540059184. Its totient is φ = 73477120.

The previous prime is 225942617. The next prime is 225942641. The reversal of 225942636 is 636249522.

It is a junction number, because it is equal to n+sod(n) for n = 225942594 and 225942603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229125 + ... + 230108.

It is an arithmetic number, because the mean of its divisors is an integer number (22502466).

Almost surely, 2^225942636 is an apocalyptic number.

It is an amenable number.

225942636 is an abundant number, since it is smaller than the sum of its proper divisors (314116548).

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

225942636 is a wasteful number, since it uses less digits than its factorization.

225942636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459281 (or 459279 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 225942636 is about 15031.3883590306. The cubic root of 225942636 is about 609.0683943128.

The spelling of 225942636 in words is "two hundred twenty-five million, nine hundred forty-two thousand, six hundred thirty-six".