249999875 has 32 divisors (see below), whose sum is σ = 335207808. Its totient is φ = 185472000.

The previous prime is 249999859. The next prime is 249999877. The reversal of 249999875 is 578999942.

249999875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 249999875 - 2⁴ = 249999859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249999877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150047 + ... + 151703.

It is an arithmetic number, because the mean of its divisors is an integer number (10475244).

Almost surely, 2^249999875 is an apocalyptic number.

249999875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

249999875 is a deficient number, since it is larger than the sum of its proper divisors (85207933).

249999875 is a wasteful number, since it uses less digits than its factorization.

249999875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1760 (or 1750 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 62.

The square root of 249999875 is about 15811.3843479943. The cubic root of 249999875 is about 629.9604199540.

The spelling of 249999875 in words is "two hundred forty-nine million, nine hundred ninety-nine thousand, eight hundred seventy-five".