3656028625 has 16 divisors (see below), whose sum is σ = 4564791504. Its totient is φ = 2923497600.

The previous prime is 3656028611. The next prime is 3656028643. The reversal of 3656028625 is 5268206563.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 215384976 + 3440643649 = 14676^2 + 58657^2 .

It is not a de Polignac number, because 3656028625 - 2³¹ = 1508544977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344397 + ... + 354853.

It is an arithmetic number, because the mean of its divisors is an integer number (285299469).

Almost surely, 2^3656028625 is an apocalyptic number.

It is an amenable number.

3656028625 is a deficient number, since it is larger than the sum of its proper divisors (908762879).

3656028625 is a wasteful number, since it uses less digits than its factorization.

3656028625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13269 (or 13259 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 3656028625 is about 60465.1025385718. The cubic root of 3656028625 is about 1540.5289442092.

The spelling of 3656028625 in words is "three billion, six hundred fifty-six million, twenty-eight thousand, six hundred twenty-five".