250823 has 4 divisors (see below), whose sum is σ = 257640. Its totient is φ = 244008.

The previous prime is 250813. The next prime is 250829. The reversal of 250823 is 328052.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 250823 - 2⁴ = 250807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 250795 and 250804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353 + ... + 3426.

It is an arithmetic number, because the mean of its divisors is an integer number (64410).

2²⁵⁰⁸²³ is an apocalyptic number.

250823 is a deficient number, since it is larger than the sum of its proper divisors (6817).

250823 is an equidigital number, since it uses as much as digits as its factorization.

250823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6816.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 250823 is about 500.8223237836. The cubic root of 250823 is about 63.0651044453.

Adding to 250823 its reverse (328052), we get a palindrome (578875).

The spelling of 250823 in words is "two hundred fifty thousand, eight hundred twenty-three".