12860794578025 has 27 divisors (see below), whose sum is σ = 16019728053573. Its totient is φ = 10242172920000.

The previous prime is 12860794578007. The next prime is 12860794578109. The reversal of 12860794578025 is 52087549706821.

The square root of 12860794578025 is 3586195.

It is a perfect power (a square), and thus also a powerful number.

12860794578025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 138475527129 + 12722319050896 = 372123^2 + 3566836^2 .

It is not a de Polignac number, because 12860794578025 - 2¹¹ = 12860794575977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4285501525 + ... + 4285504525.

Almost surely, 2^{12860794578025} is an apocalyptic number.

12860794578025 is the 3586195-th square number.

12860794578025 is the 1793098-th centered octagonal number.

It is an amenable number.

12860794578025 is a deficient number, since it is larger than the sum of its proper divisors (3158933475548).

12860794578025 is an frugal number, since it uses more digits than its factorization.

12860794578025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490 (or 3245 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 64.

Multiplying 12860794578025 by its sum of digits (64), we get a square (823090852993600 = 28689560²).

The spelling of 12860794578025 in words is "twelve trillion, eight hundred sixty billion, seven hundred ninety-four million, five hundred seventy-eight thousand, twenty-five".