225479047 has 2 divisors, whose sum is σ = 225479048. Its totient is φ = 225479046.

The previous prime is 225479039. The next prime is 225479071. The reversal of 225479047 is 740974522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225479047 - 2³ = 225479039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225479077) 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 as a sum of consecutive naturals, namely, 112739523 + 112739524.

It is an arithmetic number, because the mean of its divisors is an integer number (112739524).

Almost surely, 2^225479047 is an apocalyptic number.

225479047 is a deficient number, since it is larger than the sum of its proper divisors (1).

225479047 is an equidigital number, since it uses as much as digits as its factorization.

225479047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 225479047 is about 15015.9597428869. The cubic root of 225479047 is about 608.6515470002.

The spelling of 225479047 in words is "two hundred twenty-five million, four hundred seventy-nine thousand, forty-seven".