3785729125 has 8 divisors (see below), whose sum is σ = 4724590104. Its totient is φ = 3028583200.

The previous prime is 3785729089. The next prime is 3785729131. The reversal of 3785729125 is 5219275873.

It can be written as a sum of positive squares in 4 ways, for example, as 772641 + 3784956484 = 879^2 + 61522^2 .

It is not a de Polignac number, because 3785729125 - 2⁹ = 3785728613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15142792 + ... + 15143041.

It is an arithmetic number, because the mean of its divisors is an integer number (590573763).

Almost surely, 2^3785729125 is an apocalyptic number.

It is an amenable number.

3785729125 is a deficient number, since it is larger than the sum of its proper divisors (938860979).

3785729125 is an equidigital number, since it uses as much as digits as its factorization.

3785729125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30285848 (or 30285838 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

The square root of 3785729125 is about 61528.2790674337. The cubic root of 3785729125 is about 1558.5348292613.

The spelling of 3785729125 in words is "three billion, seven hundred eighty-five million, seven hundred twenty-nine thousand, one hundred twenty-five".