20081725889 has 2 divisors, whose sum is σ = 20081725890. Its totient is φ = 20081725888.

The previous prime is 20081725877. The next prime is 20081725901. The reversal of 20081725889 is 98852718002.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20081725877) and next prime (20081725901).

It can be written as a sum of positive squares in only one way, i.e., 19757113600 + 324612289 = 140560^2 + 18017^2 .

It is a cyclic number.

It is not a de Polignac number, because 20081725889 - 2⁸ = 20081725633 is a prime.

It is not a weakly prime, because it can be changed into another prime (20081725289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10040862944 + 10040862945.

It is an arithmetic number, because the mean of its divisors is an integer number (10040862945).

Almost surely, 2^20081725889 is an apocalyptic number.

It is an amenable number.

20081725889 is a deficient number, since it is larger than the sum of its proper divisors (1).

20081725889 is an equidigital number, since it uses as much as digits as its factorization.

20081725889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 20081725889 in words is "twenty billion, eighty-one million, seven hundred twenty-five thousand, eight hundred eighty-nine".