265138875 has 24 divisors (see below), whose sum is σ = 477959040. Its totient is φ = 141406800.

The previous prime is 265138873. The next prime is 265138889. The reversal of 265138875 is 578831562.

265138875 is a `hidden beast` number, since 265 + 1 + 388 + 7 + 5 = 666.

It is not a de Polignac number, because 265138875 - 2¹ = 265138873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 265138875.

It is not an unprimeable number, because it can be changed into a prime (265138873) 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 23 ways as a sum of consecutive naturals, for example, 116715 + ... + 118964.

It is an arithmetic number, because the mean of its divisors is an integer number (19914960).

Almost surely, 2^265138875 is an apocalyptic number.

265138875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

265138875 is a deficient number, since it is larger than the sum of its proper divisors (212820165).

265138875 is a wasteful number, since it uses less digits than its factorization.

265138875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235700 (or 235687 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 265138875 is about 16283.0855491212. The cubic root of 265138875 is about 642.4280125456.

The spelling of 265138875 in words is "two hundred sixty-five million, one hundred thirty-eight thousand, eight hundred seventy-five".