20525800079 has 2 divisors, whose sum is σ = 20525800080. Its totient is φ = 20525800078.

The previous prime is 20525800069. The next prime is 20525800081. The reversal of 20525800079 is 97000852502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20525800079 is a prime.

Together with 20525800081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20525800019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262900039 + 10262900040.

It is an arithmetic number, because the mean of its divisors is an integer number (10262900040).

Almost surely, 2^20525800079 is an apocalyptic number.

20525800079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525800079 is an equidigital number, since it uses as much as digits as its factorization.

20525800079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 20525800079 in words is "twenty billion, five hundred twenty-five million, eight hundred thousand, seventy-nine".