7225155 has 24 divisors (see below), whose sum is σ = 14313312. Its totient is φ = 3302784.

The previous prime is 7225133. The next prime is 7225177. The reversal of 7225155 is 5515227.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (7225133) and next prime (7225177).

It is not a de Polignac number, because 7225155 - 2⁵ = 7225123 is a prime.

7225155 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11154 + ... + 11783.

It is an arithmetic number, because the mean of its divisors is an integer number (596388).

Almost surely, 2^7225155 is an apocalyptic number.

7225155 is a deficient number, since it is larger than the sum of its proper divisors (7088157).

7225155 is a wasteful number, since it uses less digits than its factorization.

7225155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22955 (or 22952 counting only the distinct ones).

The product of its digits is 3500, while the sum is 27.

The square root of 7225155 is about 2687.9648435201. The cubic root of 7225155 is about 193.3224941076.

The spelling of 7225155 in words is "seven million, two hundred twenty-five thousand, one hundred fifty-five".