7990725 has 12 divisors (see below), whose sum is σ = 13211456. Its totient is φ = 4261680.

The previous prime is 7990711. The next prime is 7990751. The reversal of 7990725 is 5270997.

It is not a de Polignac number, because 7990725 - 2⁴ = 7990709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53197 + ... + 53346.

Almost surely, 2^7990725 is an apocalyptic number.

7990725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

7990725 is a deficient number, since it is larger than the sum of its proper divisors (5220731).

7990725 is a wasteful number, since it uses less digits than its factorization.

7990725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106556 (or 106551 counting only the distinct ones).

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 7990725 is about 2826.7870453927. The cubic root of 7990725 is about 199.9226784441.

The spelling of 7990725 in words is "seven million, nine hundred ninety thousand, seven hundred twenty-five".