125242511453749 has 2 divisors, whose sum is σ = 125242511453750. Its totient is φ = 125242511453748.

The previous prime is 125242511453693. The next prime is 125242511453837. The reversal of 125242511453749 is 947354115242521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67189464698724 + 58053046755025 = 8196918^2 + 7619255^2 .

It is a cyclic number.

It is not a de Polignac number, because 125242511453749 - 2⁹ = 125242511453237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125242511453749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125242511453849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62621255726874 + 62621255726875.

It is an arithmetic number, because the mean of its divisors is an integer number (62621255726875).

Almost surely, 2^{125242511453749} is an apocalyptic number.

It is an amenable number.

125242511453749 is a deficient number, since it is larger than the sum of its proper divisors (1).

125242511453749 is an equidigital number, since it uses as much as digits as its factorization.

125242511453749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096000, while the sum is 55.

The spelling of 125242511453749 in words is "one hundred twenty-five trillion, two hundred forty-two billion, five hundred eleven million, four hundred fifty-three thousand, seven hundred forty-nine".