80012500000 has 216 divisors, whose sum is σ = 203396380236. Its totient is φ = 30960000000.

The previous prime is 80012499989. The next prime is 80012500003. The reversal of 80012500000 is 521008.

It is a happy number.

It can be written as a sum of positive squares in 18 ways, for example, as 79215228304 + 797271696 = 281452^2 + 28236^2 .

It is a sliding number, since 80012500000 = 12500000 + 80000000000 and 1/12500000 + 1/80000000000 = 0.000000080012500000.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (80012500003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 462499914 + ... + 462500086.

Almost surely, 2^80012500000 is an apocalyptic number.

80012500000 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 80012500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101698190118).

80012500000 is an abundant number, since it is smaller than the sum of its proper divisors (123383880236).

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

80012500000 is an frugal number, since it uses more digits than its factorization.

80012500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

It can be divided in two parts, 800 and 12500000, that multiplied together give a 10-th power (10000000000 = 10¹⁰).

The spelling of 80012500000 in words is "eighty billion, twelve million, five hundred thousand".