3643246825 has 6 divisors (see below), whose sum is σ = 4517626094. Its totient is φ = 2914597440.

The previous prime is 3643246813. The next prime is 3643246861. The reversal of 3643246825 is 5286423463.

It is a happy number.

3643246825 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 3 ways, for example, as 780140761 + 2863106064 = 27931^2 + 53508^2 .

It is not a de Polignac number, because 3643246825 - 2¹¹ = 3643244777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72864912 + ... + 72864961.

Almost surely, 2^3643246825 is an apocalyptic number.

It is an amenable number.

3643246825 is a deficient number, since it is larger than the sum of its proper divisors (874379269).

3643246825 is a wasteful number, since it uses less digits than its factorization.

3643246825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145729883 (or 145729878 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The square root of 3643246825 is about 60359.3143185043. The cubic root of 3643246825 is about 1538.7315727620.

The spelling of 3643246825 in words is "three billion, six hundred forty-three million, two hundred forty-six thousand, eight hundred twenty-five".