7899725 has 12 divisors (see below), whose sum is σ = 10311840. Its totient is φ = 5986800.

The previous prime is 7899719. The next prime is 7899733. The reversal of 7899725 is 5279987.

It is not a de Polignac number, because 7899725 - 2¹⁴ = 7883341 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7899725.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7841 + ... + 8790.

It is an arithmetic number, because the mean of its divisors is an integer number (859320).

Almost surely, 2^7899725 is an apocalyptic number.

It is an amenable number.

7899725 is a deficient number, since it is larger than the sum of its proper divisors (2412115).

7899725 is a wasteful number, since it uses less digits than its factorization.

7899725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16660 (or 16655 counting only the distinct ones).

The product of its digits is 317520, while the sum is 47.

The square root of 7899725 is about 2810.6449437807. The cubic root of 7899725 is about 199.1608591371.

The spelling of 7899725 in words is "seven million, eight hundred ninety-nine thousand, seven hundred twenty-five".