265126889 has 2 divisors, whose sum is σ = 265126890. Its totient is φ = 265126888.

The previous prime is 265126877. The next prime is 265126891. The reversal of 265126889 is 988621562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176013289 + 89113600 = 13267^2 + 9440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265126889 is a prime.

Together with 265126891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268126889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132563444 + 132563445.

It is an arithmetic number, because the mean of its divisors is an integer number (132563445).

Almost surely, 2^265126889 is an apocalyptic number.

It is an amenable number.

265126889 is a deficient number, since it is larger than the sum of its proper divisors (1).

265126889 is an equidigital number, since it uses as much as digits as its factorization.

265126889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 47.

The square root of 265126889 is about 16282.7174943251. The cubic root of 265126889 is about 642.4183317595.

The spelling of 265126889 in words is "two hundred sixty-five million, one hundred twenty-six thousand, eight hundred eighty-nine".