7225679 has 2 divisors, whose sum is σ = 7225680. Its totient is φ = 7225678.

The previous prime is 7225667. The next prime is 7225709. The reversal of 7225679 is 9765227.

It is a weak prime.

It is an emirp because it is prime and its reverse (9765227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7225679 is a prime.

It is a super-2 number, since 2×7225679² = 104420874022082, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7225279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612839 + 3612840.

It is an arithmetic number, because the mean of its divisors is an integer number (3612840).

Almost surely, 2^7225679 is an apocalyptic number.

7225679 is a deficient number, since it is larger than the sum of its proper divisors (1).

7225679 is an equidigital number, since it uses as much as digits as its factorization.

7225679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 7225679 is about 2688.0623132658. The cubic root of 7225679 is about 193.3271675270.

It can be divided in two parts, 7 and 225679, that multiplied together give a triangular number (1579753 = T₁₇₇₇).

The spelling of 7225679 in words is "seven million, two hundred twenty-five thousand, six hundred seventy-nine".