3705125809 has 16 divisors (see below), whose sum is σ = 4891107456. Its totient is φ = 2717280000.

The previous prime is 3705125791. The next prime is 3705125849. The reversal of 3705125809 is 9085215073.

3705125809 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3705125809 - 2⁵ = 3705125777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3705125849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413942 + ... + 1416559.

It is an arithmetic number, because the mean of its divisors is an integer number (305694216).

Almost surely, 2^3705125809 is an apocalyptic number.

It is an amenable number.

3705125809 is a deficient number, since it is larger than the sum of its proper divisors (1185981647).

3705125809 is a wasteful number, since it uses less digits than its factorization.

3705125809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830536.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 3705125809 is about 60869.7446109313. The cubic root of 3705125809 is about 1547.3942773731.

The spelling of 3705125809 in words is "three billion, seven hundred five million, one hundred twenty-five thousand, eight hundred nine".