3231620825 has 6 divisors (see below), whose sum is σ = 4007209854. Its totient is φ = 2585296640.

The previous prime is 3231620813. The next prime is 3231620857. The reversal of 3231620825 is 5280261323.

It can be written as a sum of positive squares in 3 ways, for example, as 65983129 + 3165637696 = 8123^2 + 56264^2 .

It is not a de Polignac number, because 3231620825 - 2⁴ = 3231620809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3231620791 and 3231620800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64632392 + ... + 64632441.

It is an arithmetic number, because the mean of its divisors is an integer number (667868309).

Almost surely, 2^3231620825 is an apocalyptic number.

It is an amenable number.

3231620825 is a deficient number, since it is larger than the sum of its proper divisors (775589029).

3231620825 is a wasteful number, since it uses less digits than its factorization.

3231620825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129264843 (or 129264838 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 3231620825 is about 56847.3466839043. The cubic root of 3231620825 is about 1478.4505370420.

The spelling of 3231620825 in words is "three billion, two hundred thirty-one million, six hundred twenty thousand, eight hundred twenty-five".