20321305065425 has 48 divisors (see below), whose sum is σ = 31054409390592. Its totient is φ = 12845723385600.

The previous prime is 20321305065379. The next prime is 20321305065433. The reversal of 20321305065425 is 52456050312302.

It is not a de Polignac number, because 20321305065425 - 2³⁶ = 20252585588689 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4177721 + ... + 7622070.

It is an arithmetic number, because the mean of its divisors is an integer number (646966862304).

Almost surely, 2^{20321305065425} is an apocalyptic number.

20321305065425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20321305065425 is a deficient number, since it is larger than the sum of its proper divisors (10733104325167).

20321305065425 is a wasteful number, since it uses less digits than its factorization.

20321305065425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11800578 (or 11800573 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

Adding to 20321305065425 its reverse (52456050312302), we get a palindrome (72777355377727).

The spelling of 20321305065425 in words is "twenty trillion, three hundred twenty-one billion, three hundred five million, sixty-five thousand, four hundred twenty-five".