3966525 has 54 divisors (see below), whose sum is σ = 7670702. Its totient is φ = 1958400.

The previous prime is 3966517. The next prime is 3966539. The reversal of 3966525 is 5256693.

It can be written as a sum of positive squares in 9 ways, for example, as 1052676 + 2913849 = 1026^2 + 1707^2 .

It is not a de Polignac number, because 3966525 - 2³ = 3966517 is a prime.

It is a Duffinian number.

3966525 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3966525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 64995 + ... + 65055.

Almost surely, 2^3966525 is an apocalyptic number.

It is an amenable number.

3966525 is a deficient number, since it is larger than the sum of its proper divisors (3704177).

3966525 is a wasteful number, since it uses less digits than its factorization.

3966525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 86 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 3966525 is about 1991.6136673562. The cubic root of 3966525 is about 158.2960453898.

It can be divided in two parts, 39 and 66525, that added together give a square (66564 = 258²).

The spelling of 3966525 in words is "three million, nine hundred sixty-six thousand, five hundred twenty-five".