20425440042233 has 2 divisors, whose sum is σ = 20425440042234. Its totient is φ = 20425440042232.

The previous prime is 20425440042211. The next prime is 20425440042341. The reversal of 20425440042233 is 33224004452402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19897380579904 + 528059462329 = 4460648^2 + 726677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425440042233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20425440042193 and 20425440042202.

It is not a weakly prime, because it can be changed into another prime (20425440042433) 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 as a sum of consecutive naturals, namely, 10212720021116 + 10212720021117.

It is an arithmetic number, because the mean of its divisors is an integer number (10212720021117).

Almost surely, 2^{20425440042233} is an apocalyptic number.

It is an amenable number.

20425440042233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425440042233 is an equidigital number, since it uses as much as digits as its factorization.

20425440042233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 184320, while the sum is 35.

Adding to 20425440042233 its reverse (33224004452402), we get a palindrome (53649444494635).

The spelling of 20425440042233 in words is "twenty trillion, four hundred twenty-five billion, four hundred forty million, forty-two thousand, two hundred thirty-three".