265728653 has 16 divisors (see below), whose sum is σ = 279892800. Its totient is φ = 251946240.

The previous prime is 265728643. The next prime is 265728689. The reversal of 265728653 is 356827562.

It is a cyclic number.

It is not a de Polignac number, because 265728653 - 2¹⁴ = 265712269 is a prime.

It is a super-2 number, since 2×265728653² = 141223434050388818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265728643) 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 in 15 ways as a sum of consecutive naturals, for example, 428978 + ... + 429596.

It is an arithmetic number, because the mean of its divisors is an integer number (17493300).

Almost surely, 2^265728653 is an apocalyptic number.

It is an amenable number.

265728653 is a deficient number, since it is larger than the sum of its proper divisors (14164147).

265728653 is a wasteful number, since it uses less digits than its factorization.

265728653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 604800, while the sum is 44.

The square root of 265728653 is about 16301.1856317263. The cubic root of 265728653 is about 642.9040012381.

The spelling of 265728653 in words is "two hundred sixty-five million, seven hundred twenty-eight thousand, six hundred fifty-three".