249425788 has 12 divisors (see below), whose sum is σ = 436617720. Its totient is φ = 124677872.

The previous prime is 249425747. The next prime is 249425797. The reversal of 249425788 is 887524942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13623 + ... + 26161.

It is an arithmetic number, because the mean of its divisors is an integer number (36384810).

Almost surely, 2^249425788 is an apocalyptic number.

It is an amenable number.

249425788 is a deficient number, since it is larger than the sum of its proper divisors (187191932).

249425788 is a wasteful number, since it uses less digits than its factorization.

249425788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17516 (or 17514 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 249425788 is about 15793.2196844089. The cubic root of 249425788 is about 629.4778473556.

It can be divided in two parts, 2494 and 25788, that added together give a palindrome (28282).

The spelling of 249425788 in words is "two hundred forty-nine million, four hundred twenty-five thousand, seven hundred eighty-eight".