20425737659 has 2 divisors, whose sum is σ = 20425737660. Its totient is φ = 20425737658.

The previous prime is 20425737623. The next prime is 20425737763. The reversal of 20425737659 is 95673752402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20425737659 is a prime.

It is not a weakly prime, because it can be changed into another prime (20425733659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212868829 + 10212868830.

It is an arithmetic number, because the mean of its divisors is an integer number (10212868830).

Almost surely, 2^20425737659 is an apocalyptic number.

20425737659 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425737659 is an equidigital number, since it uses as much as digits as its factorization.

20425737659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 20425737659 in words is "twenty billion, four hundred twenty-five million, seven hundred thirty-seven thousand, six hundred fifty-nine".