265873 has 2 divisors, whose sum is σ = 265874. Its totient is φ = 265872.

The previous prime is 265871. The next prime is 265883. The reversal of 265873 is 378562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263169 + 2704 = 513^2 + 52^2 .

It is a cyclic number.

It is not a de Polignac number, because 265873 - 2¹ = 265871 is a prime.

Together with 265871, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹⁰ + 6² + 8⁶ + 5² + 7⁴ + 3⁵ .

It is not a weakly prime, because it can be changed into another prime (265871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132936 + 132937.

It is an arithmetic number, because the mean of its divisors is an integer number (132937).

2²⁶⁵⁸⁷³ is an apocalyptic number.

It is an amenable number.

265873 is a deficient number, since it is larger than the sum of its proper divisors (1).

265873 is an equidigital number, since it uses as much as digits as its factorization.

265873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 265873 is about 515.6287424107. The cubic root of 265873 is about 64.3020391228.

The spelling of 265873 in words is "two hundred sixty-five thousand, eight hundred seventy-three".