12515652400 has 120 divisors (see below), whose sum is σ = 31433372064. Its totient is φ = 4779878400.

The previous prime is 12515652379. The next prime is 12515652403. The reversal of 12515652400 is 425651521.

It is not an unprimeable number, because it can be changed into a prime (12515652403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7552372 + ... + 7554028.

Almost surely, 2^12515652400 is an apocalyptic number.

12515652400 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 12515652400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15716686032).

12515652400 is an abundant number, since it is smaller than the sum of its proper divisors (18917719664).

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

12515652400 is a wasteful number, since it uses less digits than its factorization.

12515652400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 12515652400 in words is "twelve billion, five hundred fifteen million, six hundred fifty-two thousand, four hundred".