265280089 has 4 divisors (see below), whose sum is σ = 265430656. Its totient is φ = 265129524.

The previous prime is 265280077. The next prime is 265280117. The reversal of 265280089 is 980082562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265280089 - 2¹⁵ = 265247321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265280009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72609 + ... + 76174.

It is an arithmetic number, because the mean of its divisors is an integer number (66357664).

Almost surely, 2^265280089 is an apocalyptic number.

It is an amenable number.

265280089 is a deficient number, since it is larger than the sum of its proper divisors (150567).

265280089 is a wasteful number, since it uses less digits than its factorization.

265280089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150566.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 265280089 is about 16287.4211893719. The cubic root of 265280089 is about 642.5420455257.

The spelling of 265280089 in words is "two hundred sixty-five million, two hundred eighty thousand, eighty-nine".