3220601306225 has 12 divisors (see below), whose sum is σ = 4059013582620. Its totient is φ = 2534243649600.

The previous prime is 3220601306207. The next prime is 3220601306243. The reversal of 3220601306225 is 5226031060223.

It is an interprime number because it is at equal distance from previous prime (3220601306207) and next prime (3220601306243).

It can be written as a sum of positive squares in 6 ways, for example, as 102579918961 + 3118021387264 = 320281^2 + 1765792^2 .

It is not a de Polignac number, because 3220601306225 - 2¹⁸ = 3220601044081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3220601306191 and 3220601306200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1055933330 + ... + 1055936379.

It is an arithmetic number, because the mean of its divisors is an integer number (338251131885).

Almost surely, 2^{3220601306225} is an apocalyptic number.

It is an amenable number.

3220601306225 is a deficient number, since it is larger than the sum of its proper divisors (838412276395).

3220601306225 is a wasteful number, since it uses less digits than its factorization.

3220601306225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111869780 (or 2111869775 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 3220601306225 its reverse (5226031060223), we get a palindrome (8446632366448).

The spelling of 3220601306225 in words is "three trillion, two hundred twenty billion, six hundred one million, three hundred six thousand, two hundred twenty-five".