265723 has 4 divisors (see below), whose sum is σ = 266760. Its totient is φ = 264688.

The previous prime is 265717. The next prime is 265729. The reversal of 265723 is 327562.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 327562 = 2 ⋅163781.

It is an interprime number because it is at equal distance from previous prime (265717) and next prime (265729).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265723 is a prime.

It is a d-powerful number, because it can be written as 2⁶ + 6⁴ + 7 + 5² + 2¹⁸ + 3⁷ .

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (265729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183 + ... + 751.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

265723 is a Friedman number, since it can be written as (5+(27/3)^6)/2, using all its digits and the basic arithmetic operations.

2²⁶⁵⁷²³ is an apocalyptic number.

265723 is a deficient number, since it is larger than the sum of its proper divisors (1037).

265723 is an equidigital number, since it uses as much as digits as its factorization.

265723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its digits is 2520, while the sum is 25.

The square root of 265723 is about 515.4832683997. The cubic root of 265723 is about 64.2899442249.

The spelling of 265723 in words is "two hundred sixty-five thousand, seven hundred twenty-three".