8781250000 has 100 divisors (see below), whose sum is σ = 21342771252. Its totient is φ = 3500000000.

The previous prime is 8781249991. The next prime is 8781250003. The reversal of 8781250000 is 521878.

8781250000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 10 ways, for example, as 482768784 + 8298481216 = 21972^2 + 91096^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×8781250000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8781250003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31249860 + ... + 31250140.

Almost surely, 2^8781250000 is an apocalyptic number.

8781250000 is a gapful number since it is divisible by the number (80) 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 8781250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10671385626).

8781250000 is an abundant number, since it is smaller than the sum of its proper divisors (12561521252).

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

8781250000 is an frugal number, since it uses more digits than its factorization.

8781250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 8781250000 is about 93708.3240699566. The cubic root of 8781250000 is about 2063.0928812849.

Adding to 8781250000 its reverse (521878), we get a palindrome (8781771878).

The spelling of 8781250000 in words is "eight billion, seven hundred eighty-one million, two hundred fifty thousand".