265172563 has 8 divisors (see below), whose sum is σ = 268496640. Its totient is φ = 261856320.

The previous prime is 265172561. The next prime is 265172581. The reversal of 265172563 is 365271562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265172563 - 2¹ = 265172561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265172561) 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 7 ways as a sum of consecutive naturals, for example, 95373 + ... + 98113.

It is an arithmetic number, because the mean of its divisors is an integer number (33562080).

Almost surely, 2^265172563 is an apocalyptic number.

265172563 is a deficient number, since it is larger than the sum of its proper divisors (3324077).

265172563 is a wasteful number, since it uses less digits than its factorization.

265172563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917.

The product of its digits is 75600, while the sum is 37.

The square root of 265172563 is about 16284.1199639403. The cubic root of 265172563 is about 642.4552199205.

The spelling of 265172563 in words is "two hundred sixty-five million, one hundred seventy-two thousand, five hundred sixty-three".