4085525 has 12 divisors (see below), whose sum is σ = 5364612. Its totient is φ = 3075840.

The previous prime is 4085519. The next prime is 4085531. The reversal of 4085525 is 5255804.

It is an interprime number because it is at equal distance from previous prime (4085519) and next prime (4085531).

It can be written as a sum of positive squares in 6 ways, for example, as 528529 + 3556996 = 727^2 + 1886^2 .

It is not a de Polignac number, because 4085525 - 2²⁰ = 3036949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 4382 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (447051).

Almost surely, 2^4085525 is an apocalyptic number.

It is an amenable number.

4085525 is a deficient number, since it is larger than the sum of its proper divisors (1279087).

4085525 is a wasteful number, since it uses less digits than its factorization.

4085525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640 (or 9635 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 4085525 is about 2021.2681662758. The cubic root of 4085525 is about 159.8634903359.

The spelling of 4085525 in words is "four million, eighty-five thousand, five hundred twenty-five".