3663025 has 6 divisors (see below), whose sum is σ = 4542182. Its totient is φ = 2930400.

The previous prime is 3663017. The next prime is 3663031. The reversal of 3663025 is 5203663.

It can be written as a sum of positive squares in 3 ways, for example, as 41616 + 3621409 = 204^2 + 1903^2 .

It is not a de Polignac number, because 3663025 - 2³ = 3663017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 146521 = 3663025 / (3 + 6 + 6 + 3 + 0 + 2 + 5).

It is a Duffinian number.

3663025 is a lucky 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 5 ways as a sum of consecutive naturals, for example, 73236 + ... + 73285.

Almost surely, 2^3663025 is an apocalyptic number.

It is an amenable number.

3663025 is a deficient number, since it is larger than the sum of its proper divisors (879157).

3663025 is a wasteful number, since it uses less digits than its factorization.

3663025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146531 (or 146526 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 3663025 is about 1913.9030800958. The cubic root of 3663025 is about 154.1510997998.

Adding to 3663025 its reverse (5203663), we get a palindrome (8866688).

The spelling of 3663025 in words is "three million, six hundred sixty-three thousand, twenty-five".