225213179 has 4 divisors (see below), whose sum is σ = 225281784. Its totient is φ = 225144576.

The previous prime is 225213167. The next prime is 225213187. The reversal of 225213179 is 971312522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225213179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225213119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29117 + ... + 36030.

It is an arithmetic number, because the mean of its divisors is an integer number (56320446).

Almost surely, 2^225213179 is an apocalyptic number.

225213179 is a deficient number, since it is larger than the sum of its proper divisors (68605).

225213179 is an equidigital number, since it uses as much as digits as its factorization.

225213179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68604.

The product of its digits is 7560, while the sum is 32.

The square root of 225213179 is about 15007.1042843048. The cubic root of 225213179 is about 608.4122274777.

The spelling of 225213179 in words is "two hundred twenty-five million, two hundred thirteen thousand, one hundred seventy-nine".