12525053549 has 2 divisors, whose sum is σ = 12525053550. Its totient is φ = 12525053548.

The previous prime is 12525053503. The next prime is 12525053591. The reversal of 12525053549 is 94535052521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12523176649 + 1876900 = 111907^2 + 1370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12525053549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12525053449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262526774 + 6262526775.

It is an arithmetic number, because the mean of its divisors is an integer number (6262526775).

Almost surely, 2^12525053549 is an apocalyptic number.

It is an amenable number.

12525053549 is a deficient number, since it is larger than the sum of its proper divisors (1).

12525053549 is an equidigital number, since it uses as much as digits as its factorization.

12525053549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 12525053549 in words is "twelve billion, five hundred twenty-five million, fifty-three thousand, five hundred forty-nine".