225806866 has 8 divisors (see below), whose sum is σ = 340668684. Its totient is φ = 112250640.

The previous prime is 225806863. The next prime is 225806873. The reversal of 225806866 is 668608522.

225806866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 224550225 + 1256641 = 14985^2 + 1121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (225806863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325965 + ... + 326656.

Almost surely, 2^225806866 is an apocalyptic number.

225806866 is a deficient number, since it is larger than the sum of its proper divisors (114861818).

225806866 is a wasteful number, since it uses less digits than its factorization.

225806866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652796.

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 225806866 is about 15026.8714641472. The cubic root of 225806866 is about 608.9463725075.

The spelling of 225806866 in words is "two hundred twenty-five million, eight hundred six thousand, eight hundred sixty-six".