26501250889 has 2 divisors, whose sum is σ = 26501250890. Its totient is φ = 26501250888.

The previous prime is 26501250869. The next prime is 26501250943. The reversal of 26501250889 is 98805210562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26501235264 + 15625 = 162792^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 26501250889 - 2⁷ = 26501250761 is a prime.

It is not a weakly prime, because it can be changed into another prime (26501250869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13250625444 + 13250625445.

It is an arithmetic number, because the mean of its divisors is an integer number (13250625445).

Almost surely, 2^26501250889 is an apocalyptic number.

It is an amenable number.

26501250889 is a deficient number, since it is larger than the sum of its proper divisors (1).

26501250889 is an equidigital number, since it uses as much as digits as its factorization.

26501250889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 26501250889 in words is "twenty-six billion, five hundred one million, two hundred fifty thousand, eight hundred eighty-nine".