12245025277 has 6 divisors (see below), whose sum is σ = 12257675102. Its totient is φ = 12232382712.

The previous prime is 12245025271. The next prime is 12245025281. The reversal of 12245025277 is 77252054221.

It can be written as a sum of positive squares in only one way, i.e., 12169178596 + 75846681 = 110314^2 + 8709^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12245025277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12245025271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4216608 + ... + 4219510.

Almost surely, 2^12245025277 is an apocalyptic number.

It is an amenable number.

12245025277 is a deficient number, since it is larger than the sum of its proper divisors (12649825).

12245025277 is an frugal number, since it uses more digits than its factorization.

12245025277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 37.

Adding to 12245025277 its reverse (77252054221), we get a palindrome (89497079498).

The spelling of 12245025277 in words is "twelve billion, two hundred forty-five million, twenty-five thousand, two hundred seventy-seven".