12500027776400 has 30 divisors (see below), whose sum is σ = 30031316733762. Its totient is φ = 5000011110400.

The previous prime is 12500027776279. The next prime is 12500027776429. The reversal of 12500027776400 is 467772000521.

It can be written as a sum of positive squares in 3 ways, for example, as 2116862043136 + 10383165733264 = 1454944^2 + 3222292^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15625034321 + ... + 15625035120.

Almost surely, 2^{12500027776400} is an apocalyptic number.

12500027776400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12500027776400 is an abundant number, since it is smaller than the sum of its proper divisors (17531288957362).

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

12500027776400 is a wasteful number, since it uses less digits than its factorization.

12500027776400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31250069459 (or 31250069448 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

Adding to 12500027776400 its reverse (467772000521), we get a palindrome (12967799776921).

The spelling of 12500027776400 in words is "twelve trillion, five hundred billion, twenty-seven million, seven hundred seventy-six thousand, four hundred".