125436660869567 has 2 divisors, whose sum is σ = 125436660869568. Its totient is φ = 125436660869566.

The previous prime is 125436660869459. The next prime is 125436660869599. The reversal of 125436660869567 is 765968066634521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125436660869567 - 2¹² = 125436660865471 is a prime.

It is a super-2 number, since 2×125436660869567² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125436660869494 and 125436660869503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125436660862567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62718330434783 + 62718330434784.

It is an arithmetic number, because the mean of its divisors is an integer number (62718330434784).

It is a 1-persistent number, because it is pandigital, but 2⋅125436660869567 = 250873321739134 is not.

Almost surely, 2^{125436660869567} is an apocalyptic number.

125436660869567 is a deficient number, since it is larger than the sum of its proper divisors (1).

125436660869567 is an equidigital number, since it uses as much as digits as its factorization.

125436660869567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2351462400, while the sum is 74.

The spelling of 125436660869567 in words is "one hundred twenty-five trillion, four hundred thirty-six billion, six hundred sixty million, eight hundred sixty-nine thousand, five hundred sixty-seven".