7225445 has 8 divisors (see below), whose sum is σ = 8687736. Its totient is φ = 5768896.

The previous prime is 7225441. The next prime is 7225469. The reversal of 7225445 is 5445227.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1852321 + 5373124 = 1361^2 + 2318^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7225445 - 2² = 7225441 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 (7225441) 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, 2159 + ... + 4371.

It is an arithmetic number, because the mean of its divisors is an integer number (1085967).

Almost surely, 2^7225445 is an apocalyptic number.

It is an amenable number.

7225445 is a deficient number, since it is larger than the sum of its proper divisors (1462291).

7225445 is a wasteful number, since it uses less digits than its factorization.

7225445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2871.

The product of its digits is 11200, while the sum is 29.

The square root of 7225445 is about 2688.0187871367. The cubic root of 7225445 is about 193.3250805699.

The spelling of 7225445 in words is "seven million, two hundred twenty-five thousand, four hundred forty-five".