3221225376 has 96 divisors (see below), whose sum is σ = 8747859456. Its totient is φ = 1036800000.

The previous prime is 3221225303. The next prime is 3221225377. The reversal of 3221225376 is 6735221223.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (3221225377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1787676 + ... + 1789476.

It is an arithmetic number, because the mean of its divisors is an integer number (91123536).

Almost surely, 2^3221225376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221225376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4373929728).

3221225376 is an abundant number, since it is smaller than the sum of its proper divisors (5526634080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221225376 is a wasteful number, since it uses less digits than its factorization.

3221225376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2446 (or 2438 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 3221225376 is about 56755.8400166890. The cubic root of 3221225376 is about 1476.8635453235.

Adding to 3221225376 its reverse (6735221223), we get a palindrome (9956446599).

The spelling of 3221225376 in words is "three billion, two hundred twenty-one million, two hundred twenty-five thousand, three hundred seventy-six".