225806863 has 2 divisors, whose sum is σ = 225806864. Its totient is φ = 225806862.

The previous prime is 225806857. The next prime is 225806873. The reversal of 225806863 is 368608522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225806863 - 2⁵ = 225806831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225806813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112903431 + 112903432.

It is an arithmetic number, because the mean of its divisors is an integer number (112903432).

Almost surely, 2^225806863 is an apocalyptic number.

225806863 is a deficient number, since it is larger than the sum of its proper divisors (1).

225806863 is an equidigital number, since it uses as much as digits as its factorization.

225806863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 225806863 is about 15026.8713643260. The cubic root of 225806863 is about 608.9463698107.

The spelling of 225806863 in words is "two hundred twenty-five million, eight hundred six thousand, eight hundred sixty-three".