3655825 has 12 divisors (see below), whose sum is σ = 4558860. Its totient is φ = 2908160.

The previous prime is 3655807. The next prime is 3655831. The reversal of 3655825 is 5285563.

It is a happy number.

3655825 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 6 ways, for example, as 81 + 3655744 = 9^2 + 1912^2 .

It is not a de Polignac number, because 3655825 - 2⁵ = 3655793 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 6141 + ... + 6709.

It is an arithmetic number, because the mean of its divisors is an integer number (379905).

Almost surely, 2^3655825 is an apocalyptic number.

It is an amenable number.

3655825 is a deficient number, since it is larger than the sum of its proper divisors (903035).

3655825 is a wasteful number, since it uses less digits than its factorization.

3655825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 831 counting only the distinct ones).

The product of its digits is 36000, while the sum is 34.

The square root of 3655825 is about 1912.0211818910. The cubic root of 3655825 is about 154.0500343409.

The spelling of 3655825 in words is "three million, six hundred fifty-five thousand, eight hundred twenty-five".