3221051425 has 6 divisors (see below), whose sum is σ = 3994103798. Its totient is φ = 2576841120.

The previous prime is 3221051419. The next prime is 3221051429. The reversal of 3221051425 is 5241501223.

It can be written as a sum of positive squares in 3 ways, for example, as 4800481 + 3216250944 = 2191^2 + 56712^2 .

It is not a de Polignac number, because 3221051425 - 2¹⁵ = 3221018657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 128842057 = 3221051425 / (3 + 2 + 2 + 1 + 0 + 5 + 1 + 4 + 2 + 5).

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 3221051425.

It is not an unprimeable number, because it can be changed into a prime (3221051429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64421004 + ... + 64421053.

Almost surely, 2^3221051425 is an apocalyptic number.

It is an amenable number.

3221051425 is a deficient number, since it is larger than the sum of its proper divisors (773052373).

3221051425 is a wasteful number, since it uses less digits than its factorization.

3221051425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128842067 (or 128842062 counting only the distinct ones).

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

The square root of 3221051425 is about 56754.3075457714. The cubic root of 3221051425 is about 1476.8369605630.

Adding to 3221051425 its reverse (5241501223), we get a palindrome (8462552648).

The spelling of 3221051425 in words is "three billion, two hundred twenty-one million, fifty-one thousand, four hundred twenty-five".