2500660000 has 120 divisors (see below), whose sum is σ = 6220243260. Its totient is φ = 989184000.

The previous prime is 2500659991. The next prime is 2500660007. The reversal of 2500660000 is 660052.

It can be written as a sum of positive squares in 10 ways, for example, as 49617936 + 2451042064 = 7044^2 + 49508^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2500660000.

It is not an unprimeable number, because it can be changed into a prime (2500660007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1939356 + ... + 1940644.

Almost surely, 2^2500660000 is an apocalyptic number.

2500660000 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 2500660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3110121630).

2500660000 is an abundant number, since it is smaller than the sum of its proper divisors (3719583260).

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

2500660000 is an equidigital number, since it uses as much as digits as its factorization.

2500660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1393 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2500660000 is about 50006.5995644575. The cubic root of 2500660000 is about 1357.3282321639.

The spelling of 2500660000 in words is "two billion, five hundred million, six hundred sixty thousand".