3985725 has 24 divisors (see below), whose sum is σ = 6939040. Its totient is φ = 2013120.

The previous prime is 3985721. The next prime is 3985777. The reversal of 3985725 is 5275893.

It is not a de Polignac number, because 3985725 - 2² = 3985721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27 + ... + 2823.

Almost surely, 2^3985725 is an apocalyptic number.

It is an amenable number.

3985725 is a deficient number, since it is larger than the sum of its proper divisors (2953315).

3985725 is a wasteful number, since it uses less digits than its factorization.

3985725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829 (or 2824 counting only the distinct ones).

The product of its digits is 75600, while the sum is 39.

The square root of 3985725 is about 1996.4280603117. The cubic root of 3985725 is about 158.5510455324.

The spelling of 3985725 in words is "three million, nine hundred eighty-five thousand, seven hundred twenty-five".