266250 has 40 divisors (see below), whose sum is σ = 674784. Its totient is φ = 70000.

The previous prime is 266239. The next prime is 266261. The reversal of 266250 is 52662.

It is an interprime number because it is at equal distance from previous prime (266239) and next prime (266261).

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266250.

It is an unprimeable number.

266250 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3715 + ... + 3785.

2²⁶⁶²⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337392).

266250 is an abundant number, since it is smaller than the sum of its proper divisors (408534).

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

266250 is an equidigital number, since it uses as much as digits as its factorization.

266250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 266250 is about 515.9941860138. The cubic root of 266250 is about 64.3324175612.

The spelling of 266250 in words is "two hundred sixty-six thousand, two hundred fifty".