20425205551193 has 2 divisors, whose sum is σ = 20425205551194. Its totient is φ = 20425205551192.

The previous prime is 20425205551181. The next prime is 20425205551319. The reversal of 20425205551193 is 39115550252402.

Together with next prime (20425205551319) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11236225794304 + 9188979756889 = 3352048^2 + 3031333^2 .

It is a cyclic number.

It is not a de Polignac number, because 20425205551193 - 2³⁰ = 20424131809369 is a prime.

It is not a weakly prime, because it can be changed into another prime (20425205551133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212602775596 + 10212602775597.

It is an arithmetic number, because the mean of its divisors is an integer number (10212602775597).

Almost surely, 2^{20425205551193} is an apocalyptic number.

It is an amenable number.

20425205551193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425205551193 is an equidigital number, since it uses as much as digits as its factorization.

20425205551193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 44.

The spelling of 20425205551193 in words is "twenty trillion, four hundred twenty-five billion, two hundred five million, five hundred fifty-one thousand, one hundred ninety-three".