249422775 has 24 divisors (see below), whose sum is σ = 471291264. Its totient is φ = 114021600.

The previous prime is 249422743. The next prime is 249422779. The reversal of 249422775 is 577224942.

It is not a de Polignac number, because 249422775 - 2⁵ = 249422743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249422779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237021 + ... + 238070.

It is an arithmetic number, because the mean of its divisors is an integer number (19637136).

Almost surely, 2^249422775 is an apocalyptic number.

249422775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249422775 is a deficient number, since it is larger than the sum of its proper divisors (221868489).

249422775 is a wasteful number, since it uses less digits than its factorization.

249422775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475111 (or 475106 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 249422775 is about 15793.1242950849. The cubic root of 249422775 is about 629.4753127014.

The spelling of 249422775 in words is "two hundred forty-nine million, four hundred twenty-two thousand, seven hundred seventy-five".