3660225 has 24 divisors (see below), whose sum is σ = 6219840. Its totient is φ = 1897920.

The previous prime is 3660221. The next prime is 3660259. The reversal of 3660225 is 5220663.

It is not a de Polignac number, because 3660225 - 2² = 3660221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3660195 and 3660204.

It is not an unprimeable number, because it can be changed into a prime (3660221) 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 23 ways as a sum of consecutive naturals, for example, 2116 + ... + 3434.

It is an arithmetic number, because the mean of its divisors is an integer number (259160).

Almost surely, 2^3660225 is an apocalyptic number.

It is an amenable number.

3660225 is a deficient number, since it is larger than the sum of its proper divisors (2559615).

3660225 is a wasteful number, since it uses less digits than its factorization.

3660225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 3660225 is about 1913.1714507592. The cubic root of 3660225 is about 154.1118123163. Note that the first 3 decimals are identical.

Adding to 3660225 its reverse (5220663), we get a palindrome (8880888).

The spelling of 3660225 in words is "three million, six hundred sixty thousand, two hundred twenty-five".