249043825 has 12 divisors (see below), whose sum is σ = 311249920. Its totient is φ = 197663760.

The previous prime is 249043819. The next prime is 249043841. The reversal of 249043825 is 528340942.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-249043825 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36045 + ... + 42394.

Almost surely, 2^249043825 is an apocalyptic number.

249043825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

249043825 is a deficient number, since it is larger than the sum of its proper divisors (62206095).

249043825 is a wasteful number, since it uses less digits than its factorization.

249043825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78576 (or 78571 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 249043825 is about 15781.1224252269. The cubic root of 249043825 is about 629.1563621740.

The spelling of 249043825 in words is "two hundred forty-nine million, forty-three thousand, eight hundred twenty-five".