125436212943553 has 2 divisors, whose sum is σ = 125436212943554. Its totient is φ = 125436212943552.

The previous prime is 125436212943523. The next prime is 125436212943589. The reversal of 125436212943553 is 355349212634521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119881739698704 + 5554473244849 = 10949052^2 + 2356793^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125436212943553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125436212943494 and 125436212943503.

It is not a weakly prime, because it can be changed into another prime (125436212943523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62718106471776 + 62718106471777.

It is an arithmetic number, because the mean of its divisors is an integer number (62718106471777).

Almost surely, 2^{125436212943553} is an apocalyptic number.

It is an amenable number.

125436212943553 is a deficient number, since it is larger than the sum of its proper divisors (1).

125436212943553 is an equidigital number, since it uses as much as digits as its factorization.

125436212943553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328000, while the sum is 55.

The spelling of 125436212943553 in words is "one hundred twenty-five trillion, four hundred thirty-six billion, two hundred twelve million, nine hundred forty-three thousand, five hundred fifty-three".