225810647 has 4 divisors (see below), whose sum is σ = 225945720. Its totient is φ = 225675576.

The previous prime is 225810623. The next prime is 225810653. The reversal of 225810647 is 746018522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225810647 - 2⁸ = 225810391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225819647) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 64997 + ... + 68382.

It is an arithmetic number, because the mean of its divisors is an integer number (56486430).

Almost surely, 2^225810647 is an apocalyptic number.

225810647 is a deficient number, since it is larger than the sum of its proper divisors (135073).

225810647 is a wasteful number, since it uses less digits than its factorization.

225810647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135072.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 225810647 is about 15026.9972715776. The cubic root of 225810647 is about 608.9497713020.

The spelling of 225810647 in words is "two hundred twenty-five million, eight hundred ten thousand, six hundred forty-seven".