7225279 has 2 divisors, whose sum is σ = 7225280. Its totient is φ = 7225278.

The previous prime is 7225277. The next prime is 7225303. The reversal of 7225279 is 9725227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7225279 - 2¹ = 7225277 is a prime.

Together with 7225277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7225271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612639 + 3612640.

It is an arithmetic number, because the mean of its divisors is an integer number (3612640).

Almost surely, 2^7225279 is an apocalyptic number.

7225279 is a deficient number, since it is larger than the sum of its proper divisors (1).

7225279 is an equidigital number, since it uses as much as digits as its factorization.

7225279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 34.

The square root of 7225279 is about 2687.9879091990. The cubic root of 7225279 is about 193.3236000517.

The spelling of 7225279 in words is "seven million, two hundred twenty-five thousand, two hundred seventy-nine".