249983825 has 24 divisors (see below), whose sum is σ = 381517248. Its totient is φ = 158230080.

The previous prime is 249983821. The next prime is 249983837. The reversal of 249983825 is 528389942.

It is not a de Polignac number, because 249983825 - 2² = 249983821 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (249983821) 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, 52667 + ... + 57216.

It is an arithmetic number, because the mean of its divisors is an integer number (15896552).

Almost surely, 2^249983825 is an apocalyptic number.

249983825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249983825 is a deficient number, since it is larger than the sum of its proper divisors (131533423).

249983825 is a wasteful number, since it uses less digits than its factorization.

249983825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109913 (or 109908 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 50.

The square root of 249983825 is about 15810.8767941566. The cubic root of 249983825 is about 629.9469385058.

The spelling of 249983825 in words is "two hundred forty-nine million, nine hundred eighty-three thousand, eight hundred twenty-five".