225478663 has 2 divisors, whose sum is σ = 225478664. Its totient is φ = 225478662.

The previous prime is 225478657. The next prime is 225478679. The reversal of 225478663 is 366874522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225478663 - 2⁹ = 225478151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225478963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112739331 + 112739332.

It is an arithmetic number, because the mean of its divisors is an integer number (112739332).

Almost surely, 2^225478663 is an apocalyptic number.

225478663 is a deficient number, since it is larger than the sum of its proper divisors (1).

225478663 is an equidigital number, since it uses as much as digits as its factorization.

225478663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 225478663 is about 15015.9469564860. The cubic root of 225478663 is about 608.6512014805.

The spelling of 225478663 in words is "two hundred twenty-five million, four hundred seventy-eight thousand, six hundred sixty-three".