24999500000 has 84 divisors (see below), whose sum is σ = 61522650000. Its totient is φ = 9999600000.

The previous prime is 24999499981. The next prime is 24999500011. The reversal of 24999500000 is 599942.

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, 475001 + ... + 524999.

It is an arithmetic number, because the mean of its divisors is an integer number (732412500).

Almost surely, 2^24999500000 is an apocalyptic number.

24999500000 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 24999500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30761325000).

24999500000 is an abundant number, since it is smaller than the sum of its proper divisors (36523150000).

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

24999500000 is an frugal number, since it uses more digits than its factorization.

24999500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50039 (or 50006 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 24999500000 in words is "twenty-four billion, nine hundred ninety-nine million, five hundred thousand".