249995075 has 30 divisors (see below), whose sum is σ = 341490420. Its totient is φ = 181548400.

The previous prime is 249995071. The next prime is 249995101. The reversal of 249995075 is 570599942.

It is a happy number.

It is not a de Polignac number, because 249995075 - 2² = 249995071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249995071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 365684 + ... + 366366.

It is an arithmetic number, because the mean of its divisors is an integer number (11383014).

Almost surely, 2^249995075 is an apocalyptic number.

249995075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249995075 is a deficient number, since it is larger than the sum of its proper divisors (91495345).

249995075 is an frugal number, since it uses more digits than its factorization.

249995075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 50.

The square root of 249995075 is about 15811.2325579001. The cubic root of 249995075 is about 629.9563881795.

The spelling of 249995075 in words is "two hundred forty-nine million, nine hundred ninety-five thousand, seventy-five".