225474979 has 2 divisors, whose sum is σ = 225474980. Its totient is φ = 225474978.

The previous prime is 225474967. The next prime is 225474989. The reversal of 225474979 is 979474522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225474979 - 2⁵ = 225474947 is a prime.

It is not a weakly prime, because it can be changed into another prime (225474989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112737489 + 112737490.

It is an arithmetic number, because the mean of its divisors is an integer number (112737490).

Almost surely, 2^225474979 is an apocalyptic number.

225474979 is a deficient number, since it is larger than the sum of its proper divisors (1).

225474979 is an equidigital number, since it uses as much as digits as its factorization.

225474979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 49.

The square root of 225474979 is about 15015.8242863987. The cubic root of 225474979 is about 608.6478866314.

The spelling of 225474979 in words is "two hundred twenty-five million, four hundred seventy-four thousand, nine hundred seventy-nine".