20425361239 has 2 divisors, whose sum is σ = 20425361240. Its totient is φ = 20425361238.

The previous prime is 20425361219. The next prime is 20425361273. The reversal of 20425361239 is 93216352402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20425361239 - 2²¹ = 20423264087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20425361198 and 20425361207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20425361219) 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, 10212680619 + 10212680620.

It is an arithmetic number, because the mean of its divisors is an integer number (10212680620).

Almost surely, 2^20425361239 is an apocalyptic number.

20425361239 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425361239 is an equidigital number, since it uses as much as digits as its factorization.

20425361239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 20425361239 in words is "twenty billion, four hundred twenty-five million, three hundred sixty-one thousand, two hundred thirty-nine".