265368889 has 2 divisors, whose sum is σ = 265368890. Its totient is φ = 265368888.

The previous prime is 265368869. The next prime is 265368899. The reversal of 265368889 is 988863562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177102864 + 88266025 = 13308^2 + 9395^2 .

It is a cyclic number.

It is not a de Polignac number, because 265368889 - 2²¹ = 263271737 is a prime.

It is not a weakly prime, because it can be changed into another prime (265368869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132684444 + 132684445.

It is an arithmetic number, because the mean of its divisors is an integer number (132684445).

Almost surely, 2^265368889 is an apocalyptic number.

It is an amenable number.

265368889 is a deficient number, since it is larger than the sum of its proper divisors (1).

265368889 is an equidigital number, since it uses as much as digits as its factorization.

265368889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 55.

The square root of 265368889 is about 16290.1469913565. The cubic root of 265368889 is about 642.6137324844.

The spelling of 265368889 in words is "two hundred sixty-five million, three hundred sixty-eight thousand, eight hundred eighty-nine".