3859825 has 12 divisors (see below), whose sum is σ = 4818268. Its totient is φ = 3067200.

The previous prime is 3859819. The next prime is 3859829. The reversal of 3859825 is 5289583.

It can be written as a sum of positive squares in 6 ways, for example, as 1806336 + 2053489 = 1344^2 + 1433^2 .

It is not a de Polignac number, because 3859825 - 2⁹ = 3859313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3859829) 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 11 ways as a sum of consecutive naturals, for example, 4099 + ... + 4951.

Almost surely, 2^3859825 is an apocalyptic number.

It is an amenable number.

3859825 is a deficient number, since it is larger than the sum of its proper divisors (958443).

3859825 is a wasteful number, since it uses less digits than its factorization.

3859825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1039 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 3859825 is about 1964.6437336067. The cubic root of 3859825 is about 156.8637301894.

It can be divided in two parts, 385 and 9825, that multiplied together give a triangular number (3782625 = T₂₇₅₀).

The spelling of 3859825 in words is "three million, eight hundred fifty-nine thousand, eight hundred twenty-five".