3265456561 has 4 divisors (see below), whose sum is σ = 3265917732. Its totient is φ = 3264995392.

The previous prime is 3265456559. The next prime is 3265456567. The reversal of 3265456561 is 1656545623.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 684816561 + 2580640000 = 26169^2 + 50800^2 .

It is a cyclic number.

It is not a de Polignac number, because 3265456561 - 2¹ = 3265456559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3265456567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219796 + ... + 234181.

It is an arithmetic number, because the mean of its divisors is an integer number (816479433).

Almost surely, 2^3265456561 is an apocalyptic number.

It is an amenable number.

3265456561 is a deficient number, since it is larger than the sum of its proper divisors (461171).

3265456561 is an equidigital number, since it uses as much as digits as its factorization.

3265456561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461170.

The product of its digits is 648000, while the sum is 43.

The square root of 3265456561 is about 57144.1734650174. The cubic root of 3265456561 is about 1483.5925266154.

The spelling of 3265456561 in words is "three billion, two hundred sixty-five million, four hundred fifty-six thousand, five hundred sixty-one".