7225145 has 8 divisors (see below), whose sum is σ = 8812680. Its totient is φ = 5685120.

The previous prime is 7225133. The next prime is 7225177. The reversal of 7225145 is 5415227.

7225145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 6615184 = 781^2 + 2572^2 .

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

It is not a de Polignac number, because 7225145 - 2¹⁰ = 7224121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11540 + ... + 12149.

It is an arithmetic number, because the mean of its divisors is an integer number (1101585).

Almost surely, 2^7225145 is an apocalyptic number.

It is an amenable number.

7225145 is a deficient number, since it is larger than the sum of its proper divisors (1587535).

7225145 is a wasteful number, since it uses less digits than its factorization.

7225145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23755.

The product of its digits is 2800, while the sum is 26.

The square root of 7225145 is about 2687.9629833761. The cubic root of 7225145 is about 193.3224049180.

The spelling of 7225145 in words is "seven million, two hundred twenty-five thousand, one hundred forty-five".