225279071 has 2 divisors, whose sum is σ = 225279072. Its totient is φ = 225279070.

The previous prime is 225279031. The next prime is 225279073. The reversal of 225279071 is 170972522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 225279071 - 2²² = 221084767 is a prime.

Together with 225279073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225279073) 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 as a sum of consecutive naturals, namely, 112639535 + 112639536.

It is an arithmetic number, because the mean of its divisors is an integer number (112639536).

Almost surely, 2^225279071 is an apocalyptic number.

225279071 is a deficient number, since it is larger than the sum of its proper divisors (1).

225279071 is an equidigital number, since it uses as much as digits as its factorization.

225279071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 225279071 is about 15009.2994839866. The cubic root of 225279071 is about 608.4715573232.

The spelling of 225279071 in words is "two hundred twenty-five million, two hundred seventy-nine thousand, seventy-one".