7290725 has 12 divisors (see below), whose sum is σ = 9736356. Its totient is φ = 5383680.

The previous prime is 7290721. The next prime is 7290749. The reversal of 7290725 is 5270927.

It can be written as a sum of positive squares in 6 ways, for example, as 70756 + 7219969 = 266^2 + 2687^2 .

It is not a de Polignac number, because 7290725 - 2² = 7290721 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7290691 and 7290700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7290721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10892 + ... + 11541.

It is an arithmetic number, because the mean of its divisors is an integer number (811363).

Almost surely, 2^7290725 is an apocalyptic number.

It is an amenable number.

7290725 is a deficient number, since it is larger than the sum of its proper divisors (2445631).

7290725 is a wasteful number, since it uses less digits than its factorization.

7290725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22456 (or 22451 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 7290725 is about 2700.1342559214. The cubic root of 7290725 is about 193.9055497299.

The spelling of 7290725 in words is "seven million, two hundred ninety thousand, seven hundred twenty-five".