11772981425 has 12 divisors (see below), whose sum is σ = 14873941980. Its totient is φ = 9240678720.

The previous prime is 11772981421. The next prime is 11772981439. The reversal of 11772981425 is 52418927711.

It can be written as a sum of positive squares in 6 ways, for example, as 14615329 + 11758366096 = 3823^2 + 108436^2 .

It is not a de Polignac number, because 11772981425 - 2² = 11772981421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11772981425.

It is not an unprimeable number, because it can be changed into a prime (11772981421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4441310 + ... + 4443959.

It is an arithmetic number, because the mean of its divisors is an integer number (1239495165).

Almost surely, 2^11772981425 is an apocalyptic number.

It is an amenable number.

11772981425 is a deficient number, since it is larger than the sum of its proper divisors (3100960555).

11772981425 is an equidigital number, since it uses as much as digits as its factorization.

11772981425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8885332 (or 8885327 counting only the distinct ones).

The product of its digits is 282240, while the sum is 47.

The spelling of 11772981425 in words is "eleven billion, seven hundred seventy-two million, nine hundred eighty-one thousand, four hundred twenty-five".