3920625 has 60 divisors (see below), whose sum is σ = 7675668. Its totient is φ = 1920000.

The previous prime is 3920561. The next prime is 3920629. The reversal of 3920625 is 5260293.

3920625 is a `hidden beast` number, since 39 + 2 + 0 + 625 = 666.

It can be written as a sum of positive squares in 10 ways, for example, as 3415104 + 505521 = 1848^2 + 711^2 .

It is not a de Polignac number, because 3920625 - 2⁶ = 3920561 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3920629) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 95605 + ... + 95645.

Almost surely, 2^3920625 is an apocalyptic number.

It is an amenable number.

3920625 is a deficient number, since it is larger than the sum of its proper divisors (3755043).

3920625 is a wasteful number, since it uses less digits than its factorization.

3920625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 3920625 is about 1980.0568173666. The cubic root of 3920625 is about 157.6830826373.

The spelling of 3920625 in words is "three million, nine hundred twenty thousand, six hundred twenty-five".