It is a congruent number.
It is an unprimeable number.
257250 is a Friedman number, since it can be written as 5250*7^2, using all its digits and the basic arithmetic operations.
2257250 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 257250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
257250 is an equidigital number, since it uses as much as digits as its factorization.
257250 is an odious number, because the sum of its binary digits is odd.
The square root of 257250 is about 507.1981861166. The cubic root of 257250 is about 63.5992207491.
The spelling of 257250 in words is "two hundred fifty-seven thousand, two hundred fifty".