3221125405 has 8 divisors (see below), whose sum is σ = 4092724152. Its totient is φ = 2425317888.

The previous prime is 3221125393. The next prime is 3221125429. The reversal of 3221125405 is 5045211223.

It can be written as a sum of positive squares in 4 ways, for example, as 26275876 + 3194849529 = 5126^2 + 56523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3221125405 - 2¹¹ = 3221123357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221125405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18947712 + ... + 18947881.

It is an arithmetic number, because the mean of its divisors is an integer number (511590519).

Almost surely, 2^3221125405 is an apocalyptic number.

It is an amenable number.

3221125405 is a deficient number, since it is larger than the sum of its proper divisors (871598747).

3221125405 is a wasteful number, since it uses less digits than its factorization.

3221125405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37895615.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 3221125405 is about 56754.9592987256. The cubic root of 3221125405 is about 1476.8482669707.

Adding to 3221125405 its reverse (5045211223), we get a palindrome (8266336628).

The spelling of 3221125405 in words is "three billion, two hundred twenty-one million, one hundred twenty-five thousand, four hundred five".