20425465679 has 2 divisors, whose sum is σ = 20425465680. Its totient is φ = 20425465678.

The previous prime is 20425465673. The next prime is 20425465717. The reversal of 20425465679 is 97656452402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20425465679 - 2⁴ = 20425465663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20425465673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10212732839 + 10212732840.

It is an arithmetic number, because the mean of its divisors is an integer number (10212732840).

Almost surely, 2^20425465679 is an apocalyptic number.

20425465679 is a deficient number, since it is larger than the sum of its proper divisors (1).

20425465679 is an equidigital number, since it uses as much as digits as its factorization.

20425465679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 50.

The spelling of 20425465679 in words is "twenty billion, four hundred twenty-five million, four hundred sixty-five thousand, six hundred seventy-nine".