20345032325305 has 32 divisors (see below), whose sum is σ = 25156957224960. Its totient is φ = 15786224395200.

The previous prime is 20345032325279. The next prime is 20345032325327. The reversal of 20345032325305 is 50352323054302.

It is a happy number.

It is not a de Polignac number, because 20345032325305 - 2¹⁷ = 20345032194233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40084606 + ... + 40588984.

It is an arithmetic number, because the mean of its divisors is an integer number (786154913280).

Almost surely, 2^{20345032325305} is an apocalyptic number.

It is an amenable number.

20345032325305 is a deficient number, since it is larger than the sum of its proper divisors (4811924899655).

20345032325305 is a wasteful number, since it uses less digits than its factorization.

20345032325305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505741.

The product of its (nonzero) digits is 324000, while the sum is 37.

Adding to 20345032325305 its reverse (50352323054302), we get a palindrome (70697355379607).

The spelling of 20345032325305 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, three hundred twenty-five thousand, three hundred five".