249995 has 4 divisors (see below), whose sum is σ = 300000. Its totient is φ = 199992.

The previous prime is 249989. The next prime is 250007. The reversal of 249995 is 599942.

249995 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 249995 - 2¹⁰ = 248971 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249995.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24995 + ... + 25004.

It is an arithmetic number, because the mean of its divisors is an integer number (75000).

2²⁴⁹⁹⁹⁵ is an apocalyptic number.

249995 is a deficient number, since it is larger than the sum of its proper divisors (50005).

249995 is an equidigital number, since it uses as much as digits as its factorization.

249995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50004.

The product of its digits is 29160, while the sum is 38.

The square root of 249995 is about 499.9949999750. The cubic root of 249995 is about 62.9956325183.

The spelling of 249995 in words is "two hundred forty-nine thousand, nine hundred ninety-five".