249998750000 has 80 divisors (see below), whose sum is σ = 605467200000. Its totient is φ = 99999000000.

The previous prime is 249998749999. The next prime is 249998750021. The reversal of 249998750000 is 57899942.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1150001 + ... + 1349999.

It is an arithmetic number, because the mean of its divisors is an integer number (7568340000).

Almost surely, 2^249998750000 is an apocalyptic number.

249998750000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249998750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302733600000).

249998750000 is an abundant number, since it is smaller than the sum of its proper divisors (355468450000).

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

249998750000 is an frugal number, since it uses more digits than its factorization.

249998750000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200042 (or 200006 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 249998750000 in words is "two hundred forty-nine billion, nine hundred ninety-eight million, seven hundred fifty thousand".