3831720625 has 10 divisors (see below), whose sum is σ = 4788118874. Its totient is φ = 3065376000.

The previous prime is 3831720619. The next prime is 3831720653. The reversal of 3831720625 is 5260271383.

3831720625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 2613152161 + 1218568464 = 51119^2 + 34908^2 .

It is not a de Polignac number, because 3831720625 - 2¹¹ = 3831718577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3064752 + ... + 3066001.

Almost surely, 2^3831720625 is an apocalyptic number.

It is an amenable number.

3831720625 is a deficient number, since it is larger than the sum of its proper divisors (956398249).

3831720625 is an frugal number, since it uses more digits than its factorization.

3831720625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130773 (or 6130758 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 3831720625 is about 61900.8935719025. The cubic root of 3831720625 is about 1564.8208071599.

The spelling of 3831720625 in words is "three billion, eight hundred thirty-one million, seven hundred twenty thousand, six hundred twenty-five".