3205404342225 has 72 divisors (see below), whose sum is σ = 5762484893880. Its totient is φ = 1703230986240.

The previous prime is 3205404342223. The next prime is 3205404342241. The reversal of 3205404342225 is 5222434045023.

3205404342225 is a `hidden beast` number, since 3 + 20 + 5 + 404 + 3 + 4 + 2 + 225 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 2186695647504 + 1018708694721 = 1478748^2 + 1009311^2 .

It is not a de Polignac number, because 3205404342225 - 2¹ = 3205404342223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3205404342225.

It is not an unprimeable number, because it can be changed into a prime (3205404342223) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 84661399 + ... + 84699251.

It is an arithmetic number, because the mean of its divisors is an integer number (80034512415).

Almost surely, 2^{3205404342225} is an apocalyptic number.

It is an amenable number.

3205404342225 is a deficient number, since it is larger than the sum of its proper divisors (2557080551655).

3205404342225 is a wasteful number, since it uses less digits than its factorization.

3205404342225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39251 (or 39243 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 36.

Adding to 3205404342225 its reverse (5222434045023), we get a palindrome (8427838387248).

The spelling of 3205404342225 in words is "three trillion, two hundred five billion, four hundred four million, three hundred forty-two thousand, two hundred twenty-five".