249802255 has 4 divisors (see below), whose sum is σ = 299762712. Its totient is φ = 199841800.

The previous prime is 249802249. The next prime is 249802279. The reversal of 249802255 is 552208942.

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

It is not a de Polignac number, because 249802255 - 2⁷ = 249802127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24980221 + ... + 24980230.

It is an arithmetic number, because the mean of its divisors is an integer number (74940678).

Almost surely, 2^249802255 is an apocalyptic number.

249802255 is a deficient number, since it is larger than the sum of its proper divisors (49960457).

249802255 is an equidigital number, since it uses as much as digits as its factorization.

249802255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49960456.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 249802255 is about 15805.1338178454. The cubic root of 249802255 is about 629.7943857435.

The spelling of 249802255 in words is "two hundred forty-nine million, eight hundred two thousand, two hundred fifty-five".