250643 has 2 divisors, whose sum is σ = 250644. Its totient is φ = 250642.

The previous prime is 250619. The next prime is 250673. The reversal of 250643 is 346052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 250643 - 2¹⁴ = 234259 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 250643.

It is not a weakly prime, because it can be changed into another prime (250673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125321 + 125322.

It is an arithmetic number, because the mean of its divisors is an integer number (125322).

2²⁵⁰⁶⁴³ is an apocalyptic number.

250643 is a deficient number, since it is larger than the sum of its proper divisors (1).

250643 is an equidigital number, since it uses as much as digits as its factorization.

250643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 250643 is about 500.6425870818. The cubic root of 250643 is about 63.0500148731.

Adding to 250643 its reverse (346052), we get a palindrome (596695).

The spelling of 250643 in words is "two hundred fifty thousand, six hundred forty-three".