225993656 has 16 divisors (see below), whose sum is σ = 484272240. Its totient is φ = 96854400.

The previous prime is 225993629. The next prime is 225993673. The reversal of 225993656 is 656399522.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 225993656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2017745 + ... + 2017856.

It is an arithmetic number, because the mean of its divisors is an integer number (30267015).

Almost surely, 2^225993656 is an apocalyptic number.

It is an amenable number.

225993656 is an abundant number, since it is smaller than the sum of its proper divisors (258278584).

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

225993656 is a wasteful number, since it uses less digits than its factorization.

225993656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035614 (or 4035610 counting only the distinct ones).

The product of its digits is 874800, while the sum is 47.

The square root of 225993656 is about 15033.0853785908. The cubic root of 225993656 is about 609.1142353447.

The spelling of 225993656 in words is "two hundred twenty-five million, nine hundred ninety-three thousand, six hundred fifty-six".