7225138 has 16 divisors (see below), whose sum is σ = 11217600. Its totient is φ = 3487536.

The previous prime is 7225133. The next prime is 7225177. The reversal of 7225138 is 8315227.

7225138 is nontrivially palindromic in base 6.

It is not an unprimeable number, because it can be changed into a prime (7225133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11763 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (701100).

Almost surely, 2^7225138 is an apocalyptic number.

7225138 is a deficient number, since it is larger than the sum of its proper divisors (3992462).

7225138 is a wasteful number, since it uses less digits than its factorization.

7225138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its digits is 3360, while the sum is 28.

The square root of 7225138 is about 2687.9616812745. The cubic root of 7225138 is about 193.3223424852.

The spelling of 7225138 in words is "seven million, two hundred twenty-five thousand, one hundred thirty-eight".