225866863 has 2 divisors, whose sum is σ = 225866864. Its totient is φ = 225866862.

The previous prime is 225866807. The next prime is 225866873. The reversal of 225866863 is 368668522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225866863 - 2²⁵ = 192312431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225866873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112933431 + 112933432.

It is an arithmetic number, because the mean of its divisors is an integer number (112933432).

Almost surely, 2^225866863 is an apocalyptic number.

225866863 is a deficient number, since it is larger than the sum of its proper divisors (1).

225866863 is an equidigital number, since it uses as much as digits as its factorization.

225866863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 46.

The square root of 225866863 is about 15028.8676552826. The cubic root of 225866863 is about 609.0003001860. Note that the first 3 decimals are identical.

The spelling of 225866863 in words is "two hundred twenty-five million, eight hundred sixty-six thousand, eight hundred sixty-three".