12566628250 has 32 divisors (see below), whose sum is σ = 25663345344.
Its totient is φ = 4569682000.
The previous prime is 12566628209. The next prime is 12566628251. The reversal of 12566628250 is 5282666521.
It is a junction number, because it is equal to n+sod(n) for n = 12566628197 and 12566628206.
It is not an unprimeable number, because it can be changed into a prime (12566628251) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2282092 + ... + 2287591.
It is an arithmetic number, because the mean of its divisors is an integer number (801979542).
Almost surely, 212566628250 is an apocalyptic number.
12566628250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12566628250 is an abundant number, since it is smaller than the sum of its proper divisors (13096717094).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12566628250 is a wasteful number, since it uses less digits than its factorization.
12566628250 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4569711 (or 4569701 counting only the distinct ones).
The product of its (nonzero) digits is 345600, while the sum is 43.
The spelling of 12566628250 in words is "twelve billion, five hundred sixty-six million, six hundred twenty-eight thousand, two hundred fifty".