3905625 has 20 divisors (see below), whose sum is σ = 6510416. Its totient is φ = 2082000.

The previous prime is 3905599. The next prime is 3905641. The reversal of 3905625 is 5265093.

It is not a de Polignac number, because 3905625 - 2⁹ = 3905113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3905592 and 3905601.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 834 + ... + 2916.

Almost surely, 2^3905625 is an apocalyptic number.

It is an amenable number.

3905625 is a deficient number, since it is larger than the sum of its proper divisors (2604791).

3905625 is an equidigital number, since it uses as much as digits as its factorization.

3905625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2091 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 3905625 is about 1976.2654173972. The cubic root of 3905625 is about 157.4817313152.

The spelling of 3905625 in words is "three million, nine hundred five thousand, six hundred twenty-five".