125934606569 has 2 divisors, whose sum is σ = 125934606570. Its totient is φ = 125934606568.

The previous prime is 125934606557. The next prime is 125934606587. The reversal of 125934606569 is 965606439521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125006794969 + 927811600 = 353563^2 + 30460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125934606569 is a prime.

It is a super-2 number, since 2×125934606569² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125934606599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62967303284 + 62967303285.

It is an arithmetic number, because the mean of its divisors is an integer number (62967303285).

Almost surely, 2^125934606569 is an apocalyptic number.

It is an amenable number.

125934606569 is a deficient number, since it is larger than the sum of its proper divisors (1).

125934606569 is an equidigital number, since it uses as much as digits as its factorization.

125934606569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 125934606569 in words is "one hundred twenty-five billion, nine hundred thirty-four million, six hundred six thousand, five hundred sixty-nine".