325666560553 has 16 divisors (see below), whose sum is σ = 332061206400. Its totient is φ = 319326731136.

The previous prime is 325666560509. The next prime is 325666560559. The reversal of 325666560553 is 355065666523.

It is a cyclic number.

It is not a de Polignac number, because 325666560553 - 2²⁹ = 325129689641 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 325666560553.

It is not an unprimeable number, because it can be changed into a prime (325666560559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20110926 + ... + 20127112.

It is an arithmetic number, because the mean of its divisors is an integer number (20753825400).

Almost surely, 2^325666560553 is an apocalyptic number.

It is an amenable number.

325666560553 is a deficient number, since it is larger than the sum of its proper divisors (6394645847).

325666560553 is a wasteful number, since it uses less digits than its factorization.

325666560553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856.

The product of its (nonzero) digits is 14580000, while the sum is 52.

The spelling of 325666560553 in words is "three hundred twenty-five billion, six hundred sixty-six million, five hundred sixty thousand, five hundred fifty-three".