3663825 has 24 divisors (see below), whose sum is σ = 6609696. Its totient is φ = 1776000.

The previous prime is 3663811. The next prime is 3663833. The reversal of 3663825 is 5283663.

It is not a de Polignac number, because 3663825 - 2¹³ = 3655633 is a prime.

It is a super-2 number, since 2×3663825² = 26847227261250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1396 + ... + 3045.

It is an arithmetic number, because the mean of its divisors is an integer number (275404).

Almost surely, 2^3663825 is an apocalyptic number.

It is an amenable number.

3663825 is a deficient number, since it is larger than the sum of its proper divisors (2945871).

3663825 is a wasteful number, since it uses less digits than its factorization.

3663825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465 (or 4460 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 3663825 is about 1914.1120656848. The cubic root of 3663825 is about 154.1623211177.

It can be divided in two parts, 36638 and 25, that added together give a palindrome (36663).

The spelling of 3663825 in words is "three million, six hundred sixty-three thousand, eight hundred twenty-five".