7225311 has 4 divisors (see below), whose sum is σ = 9633752. Its totient is φ = 4816872.

The previous prime is 7225303. The next prime is 7225327. The reversal of 7225311 is 1135227.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7225311 - 2³ = 7225303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7225711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1204216 + ... + 1204221.

It is an arithmetic number, because the mean of its divisors is an integer number (2408438).

Almost surely, 2^7225311 is an apocalyptic number.

7225311 is a deficient number, since it is larger than the sum of its proper divisors (2408441).

7225311 is a wasteful number, since it uses less digits than its factorization.

7225311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408440.

The product of its digits is 420, while the sum is 21.

The square root of 7225311 is about 2687.9938616001. The cubic root of 7225311 is about 193.3238854545.

The spelling of 7225311 in words is "seven million, two hundred twenty-five thousand, three hundred eleven".