225759979 has 2 divisors, whose sum is σ = 225759980. Its totient is φ = 225759978.

The previous prime is 225759967. The next prime is 225760009. The reversal of 225759979 is 979957522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 225759979 - 2²⁵ = 192205547 is a prime.

It is not a weakly prime, because it can be changed into another prime (225759679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112879989 + 112879990.

It is an arithmetic number, because the mean of its divisors is an integer number (112879990).

Almost surely, 2^225759979 is an apocalyptic number.

225759979 is a deficient number, since it is larger than the sum of its proper divisors (1).

225759979 is an equidigital number, since it uses as much as digits as its factorization.

225759979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3572100, while the sum is 55.

The square root of 225759979 is about 15025.3112779736. The cubic root of 225759979 is about 608.9042219661.

The spelling of 225759979 in words is "two hundred twenty-five million, seven hundred fifty-nine thousand, nine hundred seventy-nine".