249904375 has 30 divisors (see below), whose sum is σ = 358391528. Its totient is φ = 170646000.

The previous prime is 249904367. The next prime is 249904427. The reversal of 249904375 is 573409942.

It is not a de Polignac number, because 249904375 - 2³ = 249904367 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 (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1045506 + ... + 1045744.

Almost surely, 2^249904375 is an apocalyptic number.

249904375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249904375 is a deficient number, since it is larger than the sum of its proper divisors (108487153).

249904375 is an frugal number, since it uses more digits than its factorization.

249904375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 249904375 is about 15808.3640836109. The cubic root of 249904375 is about 629.8801947375.

The spelling of 249904375 in words is "two hundred forty-nine million, nine hundred four thousand, three hundred seventy-five".