3831660225 has 54 divisors (see below), whose sum is σ = 6914960130. Its totient is φ = 2028168960.

The previous prime is 3831660221. The next prime is 3831660227. The reversal of 3831660225 is 5220661383.

It is a happy number.

3831660225 is a `hidden beast` number, since 38 + 3 + 16 + 602 + 2 + 5 = 666.

3831660225 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 213276816 + 3618383409 = 14604^2 + 60153^2 .

It is not a de Polignac number, because 3831660225 - 2² = 3831660221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3831660225.

It is not an unprimeable number, because it can be changed into a prime (3831660221) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 6733741 + ... + 6734309.

Almost surely, 2^3831660225 is an apocalyptic number.

It is an amenable number.

3831660225 is a deficient number, since it is larger than the sum of its proper divisors (3083299905).

3831660225 is a wasteful number, since it uses less digits than its factorization.

3831660225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 3831660225 is about 61900.4056933394. The cubic root of 3831660225 is about 1564.8125849466.

The spelling of 3831660225 in words is "three billion, eight hundred thirty-one million, six hundred sixty thousand, two hundred twenty-five".