3725905 has 4 divisors (see below), whose sum is σ = 4471092. Its totient is φ = 2980720.

The previous prime is 3725899. The next prime is 3725923. The reversal of 3725905 is 5095273.

It is a happy number.

3725905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 2862864 = 929^2 + 1692^2 .

It is not a de Polignac number, because 3725905 - 2¹⁹ = 3201617 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372586 + ... + 372595.

It is an arithmetic number, because the mean of its divisors is an integer number (1117773).

Almost surely, 2^3725905 is an apocalyptic number.

It is an amenable number.

3725905 is a deficient number, since it is larger than the sum of its proper divisors (745187).

3725905 is an equidigital number, since it uses as much as digits as its factorization.

3725905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745186.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 3725905 is about 1930.2603451348. The cubic root of 3725905 is about 155.0281599895.

The spelling of 3725905 in words is "three million, seven hundred twenty-five thousand, nine hundred five".