3865025 has 12 divisors (see below), whose sum is σ = 4884732. Its totient is φ = 3032640.

The previous prime is 3865019. The next prime is 3865063. The reversal of 3865025 is 5205683.

It can be written as a sum of positive squares in 6 ways, for example, as 446224 + 3418801 = 668^2 + 1849^2 .

It is not a de Polignac number, because 3865025 - 2⁴ = 3865009 is a prime.

It is an Ulam number.

It is a Duffinian 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, 134 + ... + 2783.

It is an arithmetic number, because the mean of its divisors is an integer number (407061).

Almost surely, 2^3865025 is an apocalyptic number.

It is an amenable number.

3865025 is a deficient number, since it is larger than the sum of its proper divisors (1019707).

3865025 is a wasteful number, since it uses less digits than its factorization.

3865025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2980 (or 2975 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 3865025 is about 1965.9666833393. The cubic root of 3865025 is about 156.9341414445.

The spelling of 3865025 in words is "three million, eight hundred sixty-five thousand, twenty-five".