20005225737121 has 8 divisors (see below), whose sum is σ = 20303996721984. Its totient is φ = 19706460209040.

The previous prime is 20005225737113. The next prime is 20005225737131. The reversal of 20005225737121 is 12173752250002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20005225737121 - 2³ = 20005225737113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005225737131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6345756 + ... + 8959858.

It is an arithmetic number, because the mean of its divisors is an integer number (2537999590248).

Almost surely, 2^{20005225737121} is an apocalyptic number.

It is an amenable number.

20005225737121 is a deficient number, since it is larger than the sum of its proper divisors (298770984863).

20005225737121 is a wasteful number, since it uses less digits than its factorization.

20005225737121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728391.

The product of its (nonzero) digits is 58800, while the sum is 37.

Adding to 20005225737121 its reverse (12173752250002), we get a palindrome (32178977987123).

The spelling of 20005225737121 in words is "twenty trillion, five billion, two hundred twenty-five million, seven hundred thirty-seven thousand, one hundred twenty-one".