20225342789 has 2 divisors, whose sum is σ = 20225342790. Its totient is φ = 20225342788.

The previous prime is 20225342783. The next prime is 20225342801. The reversal of 20225342789 is 98724352202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19630812100 + 594530689 = 140110^2 + 24383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20225342789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20225342783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10112671394 + 10112671395.

It is an arithmetic number, because the mean of its divisors is an integer number (10112671395).

Almost surely, 2^20225342789 is an apocalyptic number.

It is an amenable number.

20225342789 is a deficient number, since it is larger than the sum of its proper divisors (1).

20225342789 is an equidigital number, since it uses as much as digits as its factorization.

20225342789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 20225342789 in words is "twenty billion, two hundred twenty-five million, three hundred forty-two thousand, seven hundred eighty-nine".