265500 has 72 divisors (see below), whose sum is σ = 851760. Its totient is φ = 69600.

The previous prime is 265493. The next prime is 265511. The reversal of 265500 is 5562.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 4471 + ... + 4529.

It is an arithmetic number, because the mean of its divisors is an integer number (11830).

2²⁶⁵⁵⁰⁰ is an apocalyptic number.

265500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425880).

265500 is an abundant number, since it is smaller than the sum of its proper divisors (586260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265500 is a wasteful number, since it uses less digits than its factorization.

265500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 265500 is about 515.2669211195. The cubic root of 265500 is about 64.2719547271.

The spelling of 265500 in words is "two hundred sixty-five thousand, five hundred".