225994556 has 6 divisors (see below), whose sum is σ = 395490480. Its totient is φ = 112997276.

The previous prime is 225994547. The next prime is 225994579. The reversal of 225994556 is 655499522.

It is a self number, because there is not a number n which added to its sum of digits gives 225994556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28249316 + ... + 28249323.

It is an arithmetic number, because the mean of its divisors is an integer number (65915080).

Almost surely, 2^225994556 is an apocalyptic number.

It is an amenable number.

225994556 is a deficient number, since it is larger than the sum of its proper divisors (169495924).

225994556 is a wasteful number, since it uses less digits than its factorization.

225994556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56498643 (or 56498641 counting only the distinct ones).

The product of its digits is 972000, while the sum is 47.

The square root of 225994556 is about 15033.1153125359. The cubic root of 225994556 is about 609.1150439251.

The spelling of 225994556 in words is "two hundred twenty-five million, nine hundred ninety-four thousand, five hundred fifty-six".