3666225 has 12 divisors (see below), whose sum is σ = 6061616. Its totient is φ = 1955280.

The previous prime is 3666197. The next prime is 3666233. The reversal of 3666225 is 5226663.

It is not a de Polignac number, because 3666225 - 2¹⁶ = 3600689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3666192 and 3666201.

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 11 ways as a sum of consecutive naturals, for example, 24367 + ... + 24516.

Almost surely, 2^3666225 is an apocalyptic number.

It is an amenable number.

3666225 is a deficient number, since it is larger than the sum of its proper divisors (2395391).

3666225 is a wasteful number, since it uses less digits than its factorization.

3666225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48896 (or 48891 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 3666225 is about 1914.7388855925. The cubic root of 3666225 is about 154.1959752735.

The spelling of 3666225 in words is "three million, six hundred sixty-six thousand, two hundred twenty-five".