249888750 has 80 divisors (see below), whose sum is σ = 641757072. Its totient is φ = 64800000.

The previous prime is 249888731. The next prime is 249888773. The reversal of 249888750 is 57888942.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 249888693 and 249888702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 137850 + ... + 139650.

Almost surely, 2^249888750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249888750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320878536).

249888750 is an abundant number, since it is smaller than the sum of its proper divisors (391868322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249888750 is a wasteful number, since it uses less digits than its factorization.

249888750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 249888750 is about 15807.8698754766. The cubic root of 249888750 is about 629.8670669386.

The spelling of 249888750 in words is "two hundred forty-nine million, eight hundred eighty-eight thousand, seven hundred fifty".