12442287025 has 27 divisors (see below), whose sum is σ = 17952997419. Its totient is φ = 8529176880.

The previous prime is 12442287001. The next prime is 12442287041. The reversal of 12442287025 is 52078224421.

The square root of 12442287025 is 111545.

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

It can be written as a sum of positive squares in only one way, i.e., 4479223329 + 7963063696 = 66927^2 + 89236^2 .

It is not a de Polignac number, because 12442287025 - 2¹¹ = 12442284977 is a prime.

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, 3902482 + ... + 3905668.

Almost surely, 2^12442287025 is an apocalyptic number.

12442287025 is the 111545-th square number.

12442287025 is the 55773-rd centered octagonal number.

It is an amenable number.

12442287025 is a deficient number, since it is larger than the sum of its proper divisors (5510710394).

12442287025 is an frugal number, since it uses more digits than its factorization.

12442287025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6398 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 37.

The spelling of 12442287025 in words is "twelve billion, four hundred forty-two million, two hundred eighty-seven thousand, twenty-five".