3856725 has 36 divisors (see below), whose sum is σ = 7046052. Its totient is φ = 2016000.

The previous prime is 3856717. The next prime is 3856729. The reversal of 3856725 is 5276583.

It can be written as a sum of positive squares in 6 ways, for example, as 463761 + 3392964 = 681^2 + 1842^2 .

It is not a de Polignac number, because 3856725 - 2³ = 3856717 is a prime.

It is an alternating number because its digits alternate between odd and even.

Its product of digits (50400) is a multiple of the sum of its prime divisors (350).

It is a self number, because there is not a number n which added to its sum of digits gives 3856725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856729) 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 35 ways as a sum of consecutive naturals, for example, 13585 + ... + 13865.

Almost surely, 2^3856725 is an apocalyptic number.

It is an amenable number.

3856725 is a deficient number, since it is larger than the sum of its proper divisors (3189327).

3856725 is a wasteful number, since it uses less digits than its factorization.

3856725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 350 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 3856725 is about 1963.8546280211. The cubic root of 3856725 is about 156.8217241567.

The spelling of 3856725 in words is "three million, eight hundred fifty-six thousand, seven hundred twenty-five".