125512516049 has 2 divisors, whose sum is σ = 125512516050. Its totient is φ = 125512516048.

The previous prime is 125512516037. The next prime is 125512516117. The reversal of 125512516049 is 940615215521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92075833600 + 33436682449 = 303440^2 + 182857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125512516049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125512515997 and 125512516015.

It is not a weakly prime, because it can be changed into another prime (125512510049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62756258024 + 62756258025.

It is an arithmetic number, because the mean of its divisors is an integer number (62756258025).

Almost surely, 2^125512516049 is an apocalyptic number.

It is an amenable number.

125512516049 is a deficient number, since it is larger than the sum of its proper divisors (1).

125512516049 is an equidigital number, since it uses as much as digits as its factorization.

125512516049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 125512516049 in words is "one hundred twenty-five billion, five hundred twelve million, five hundred sixteen thousand, forty-nine".