12548349793225 has 9 divisors (see below), whose sum is σ = 15559975706293. Its totient is φ = 10038665665120.

The previous prime is 12548349793223. The next prime is 12548349793247. The reversal of 12548349793225 is 52239794384521.

The square root of 12548349793225 is 3542365.

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

It can be written as a sum of positive squares in 4 ways, for example, as 838566927289 + 11709782865936 = 915733^2 + 3421956^2 .

It is not a de Polignac number, because 12548349793225 - 2¹ = 12548349793223 is a prime.

It is a super-2 number, since 2×12548349793225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12548349793223) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17357589 + ... + 18066061.

Almost surely, 2^{12548349793225} is an apocalyptic number.

12548349793225 is the 3542365-th square number.

12548349793225 is the 1771183-rd centered octagonal number.

It is an amenable number.

12548349793225 is a deficient number, since it is larger than the sum of its proper divisors (3011625913068).

12548349793225 is an frugal number, since it uses more digits than its factorization.

12548349793225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416956 (or 708478 counting only the distinct ones).

The product of its digits is 130636800, while the sum is 64.

Multiplying 12548349793225 by its sum of digits (64), we get a square (803094386766400 = 28338920²).

The spelling of 12548349793225 in words is "twelve trillion, five hundred forty-eight billion, three hundred forty-nine million, seven hundred ninety-three thousand, two hundred twenty-five".