3653825 has 12 divisors (see below), whose sum is σ = 5178240. Its totient is φ = 2505360.

The previous prime is 3653821. The next prime is 3653831. The reversal of 3653825 is 5283563.

It is not a de Polignac number, because 3653825 - 2² = 3653821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3653791 and 3653800.

It is not an unprimeable number, because it can be changed into a prime (3653821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10265 + ... + 10614.

It is an arithmetic number, because the mean of its divisors is an integer number (431520).

Almost surely, 2^3653825 is an apocalyptic number.

3653825 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3653825 is a deficient number, since it is larger than the sum of its proper divisors (1524415).

3653825 is a wasteful number, since it uses less digits than its factorization.

3653825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20896 (or 20891 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 3653825 is about 1911.4981035826. The cubic root of 3653825 is about 154.0219370560.

It can be divided in two parts, 36538 and 25, that added together give a palindrome (36563).

The spelling of 3653825 in words is "three million, six hundred fifty-three thousand, eight hundred twenty-five".