3656225 has 6 divisors (see below), whose sum is σ = 4533750. Its totient is φ = 2924960.

The previous prime is 3656183. The next prime is 3656231. The reversal of 3656225 is 5226563.

It is a happy number.

3656225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 937024 + 2719201 = 968^2 + 1649^2 .

It is not a de Polignac number, because 3656225 - 2¹⁴ = 3639841 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁵ + 6³ + 5⁸ + 6⁴ + 2¹⁸ + 2²⁰ + 5⁹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73100 + ... + 73149.

It is an arithmetic number, because the mean of its divisors is an integer number (755625).

Almost surely, 2^3656225 is an apocalyptic number.

It is an amenable number.

3656225 is a deficient number, since it is larger than the sum of its proper divisors (877525).

3656225 is a wasteful number, since it uses less digits than its factorization.

3656225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146259 (or 146254 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 3656225 is about 1912.1257803816. The cubic root of 3656225 is about 154.0556525681.

The spelling of 3656225 in words is "three million, six hundred fifty-six thousand, two hundred twenty-five".