12578744025 has 27 divisors (see below), whose sum is σ = 22532941821. Its totient is φ = 6707766240.

The previous prime is 12578743993. The next prime is 12578744041. The reversal of 12578744025 is 52044787521.

The square root of 12578744025 is 112155.

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

12578744025 is a `hidden beast` number, since 1 + 2 + 578 + 74 + 4 + 0 + 2 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2233413081 + 10345330944 = 47259^2 + 101712^2 .

It is not a de Polignac number, because 12578744025 - 2⁵ = 12578743993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1678587 + ... + 1686063.

Almost surely, 2^12578744025 is an apocalyptic number.

12578744025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12578744025 is the 112155-th square number.

12578744025 is the 56078-th centered octagonal number.

It is an amenable number.

12578744025 is a deficient number, since it is larger than the sum of its proper divisors (9954197796).

12578744025 is an frugal number, since it uses more digits than its factorization.

12578744025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14970 (or 7485 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The spelling of 12578744025 in words is "twelve billion, five hundred seventy-eight million, seven hundred forty-four thousand, twenty-five".