3865825 has 12 divisors (see below), whose sum is σ = 4821120. Its totient is φ = 3074960.

The previous prime is 3865819. The next prime is 3865847. The reversal of 3865825 is 5285683.

It is not a de Polignac number, because 3865825 - 2²¹ = 1768673 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 8² + 6⁵ + 5⁶ + 8⁵ + 2¹⁸ + 5⁹ .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5652 + ... + 6298.

It is an arithmetic number, because the mean of its divisors is an integer number (401760).

Almost surely, 2^3865825 is an apocalyptic number.

It is an amenable number.

3865825 is a deficient number, since it is larger than the sum of its proper divisors (955295).

3865825 is a wasteful number, since it uses less digits than its factorization.

3865825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 891 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 3865825 is about 1966.1701350595. The cubic root of 3865825 is about 156.9449683388.

It can be divided in two parts, 38658 and 25, that added together give a palindrome (38683).

The spelling of 3865825 in words is "three million, eight hundred sixty-five thousand, eight hundred twenty-five".