7225811 has 2 divisors, whose sum is σ = 7225812. Its totient is φ = 7225810.

The previous prime is 7225807. The next prime is 7225819. The reversal of 7225811 is 1185227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7225811 - 2² = 7225807 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7225819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612905 + 3612906.

It is an arithmetic number, because the mean of its divisors is an integer number (3612906).

Almost surely, 2^7225811 is an apocalyptic number.

7225811 is a deficient number, since it is larger than the sum of its proper divisors (1).

7225811 is an equidigital number, since it uses as much as digits as its factorization.

7225811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 26.

The square root of 7225811 is about 2688.0868661559. The cubic root of 7225811 is about 193.3283447649.

The spelling of 7225811 in words is "seven million, two hundred twenty-five thousand, eight hundred eleven".