12499750000 has 70 divisors (see below), whose sum is σ = 30273050000. Its totient is φ = 4999800000.

The previous prime is 12499749979. The next prime is 12499750019. The reversal of 12499750000 is 5799421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 225001 + ... + 274999.

Almost surely, 2^12499750000 is an apocalyptic number.

12499750000 is a gapful number since it is divisible by the number (10) 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 12499750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15136525000).

12499750000 is an abundant number, since it is smaller than the sum of its proper divisors (17773300000).

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

12499750000 is an frugal number, since it uses more digits than its factorization.

12499750000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50037 (or 50006 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 12499750000 in words is "twelve billion, four hundred ninety-nine million, seven hundred fifty thousand".