12515210000 has 100 divisors (see below), whose sum is σ = 30385870284. Its totient is φ = 4992000000.

The previous prime is 12515209969. The next prime is 12515210011. The reversal of 12515210000 is 1251521.

It can be written as a sum of positive squares in 10 ways, for example, as 10005600784 + 2509609216 = 100028^2 + 50096^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4008440 + ... + 4011560.

Almost surely, 2^12515210000 is an apocalyptic number.

12515210000 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 12515210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15192935142).

12515210000 is an abundant number, since it is smaller than the sum of its proper divisors (17870660284).

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

12515210000 is an equidigital number, since it uses as much as digits as its factorization.

12515210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

Adding to 12515210000 its reverse (1251521), we get a palindrome (12516461521).

12515210000 divided by its reverse (1251521) gives a 4-th power (10000 = 10⁴).

The spelling of 12515210000 in words is "twelve billion, five hundred fifteen million, two hundred ten thousand".