225213379 has 2 divisors, whose sum is σ = 225213380. Its totient is φ = 225213378.

The previous prime is 225213319. The next prime is 225213383. The reversal of 225213379 is 973312522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225213379 - 2²⁷ = 90995651 is a prime.

It is not a weakly prime, because it can be changed into another prime (225213319) 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, 112606689 + 112606690.

It is an arithmetic number, because the mean of its divisors is an integer number (112606690).

Almost surely, 2^225213379 is an apocalyptic number.

225213379 is a deficient number, since it is larger than the sum of its proper divisors (1).

225213379 is an equidigital number, since it uses as much as digits as its factorization.

225213379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 225213379 is about 15007.1109478140. The cubic root of 225213379 is about 608.4124075773.

The spelling of 225213379 in words is "two hundred twenty-five million, two hundred thirteen thousand, three hundred seventy-nine".