20125605333321 has 16 divisors (see below), whose sum is σ = 29971814814720. Its totient is φ = 13346823777840.

The previous prime is 20125605333307. The next prime is 20125605333341. The reversal of 20125605333321 is 12333350652102.

20125605333321 is a `hidden beast` number, since 2 + 0 + 1 + 25 + 605 + 3 + 3 + 3 + 3 + 21 = 666.

It is not a de Polignac number, because 20125605333321 - 2⁹ = 20125605332809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20125605333341) 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, 1951284870 + ... + 1951295183.

It is an arithmetic number, because the mean of its divisors is an integer number (1873238425920).

Almost surely, 2^{20125605333321} is an apocalyptic number.

It is an amenable number.

20125605333321 is a deficient number, since it is larger than the sum of its proper divisors (9846209481399).

20125605333321 is a wasteful number, since it uses less digits than its factorization.

20125605333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902580253 (or 3902580247 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 36.

Adding to 20125605333321 its reverse (12333350652102), we get a palindrome (32458955985423).

The spelling of 20125605333321 in words is "twenty trillion, one hundred twenty-five billion, six hundred five million, three hundred thirty-three thousand, three hundred twenty-one".