20525800019 has 2 divisors, whose sum is σ = 20525800020. Its totient is φ = 20525800018.

The previous prime is 20525800007. The next prime is 20525800033. The reversal of 20525800019 is 91000852502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20525800019 - 2¹⁶ = 20525734483 is a prime.

It is a super-2 number, since 2×20525800019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20525800069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10262900009 + 10262900010.

It is an arithmetic number, because the mean of its divisors is an integer number (10262900010).

Almost surely, 2^20525800019 is an apocalyptic number.

20525800019 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525800019 is an equidigital number, since it uses as much as digits as its factorization.

20525800019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 20525800019 in words is "twenty billion, five hundred twenty-five million, eight hundred thousand, nineteen".