3216225172 has 24 divisors (see below), whose sum is σ = 5961599784. Its totient is φ = 1512978432.

The previous prime is 3216225143. The next prime is 3216225239. The reversal of 3216225172 is 2715226123.

It can be written as a sum of positive squares in 4 ways, for example, as 4056196 + 3212168976 = 2014^2 + 56676^2 .

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, 235228 + ... + 248524.

It is an arithmetic number, because the mean of its divisors is an integer number (248399991).

Almost surely, 2^3216225172 is an apocalyptic number.

It is an amenable number.

3216225172 is a deficient number, since it is larger than the sum of its proper divisors (2745374612).

3216225172 is a wasteful number, since it uses less digits than its factorization.

3216225172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16875 (or 16873 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 3216225172 is about 56711.7727813194. The cubic root of 3216225172 is about 1476.0989870771.

The spelling of 3216225172 in words is "three billion, two hundred sixteen million, two hundred twenty-five thousand, one hundred seventy-two".