125756577899 has 2 divisors, whose sum is σ = 125756577900. Its totient is φ = 125756577898.

The previous prime is 125756577889. The next prime is 125756577901. The reversal of 125756577899 is 998775657521.

It is a strong prime.

It is an emirp because it is prime and its reverse (998775657521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125756577899 - 2²⁰ = 125755529323 is a prime.

Together with 125756577901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125756577889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62878288949 + 62878288950.

It is an arithmetic number, because the mean of its divisors is an integer number (62878288950).

Almost surely, 2^125756577899 is an apocalyptic number.

125756577899 is a deficient number, since it is larger than the sum of its proper divisors (1).

125756577899 is an equidigital number, since it uses as much as digits as its factorization.

125756577899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396000, while the sum is 71.

The spelling of 125756577899 in words is "one hundred twenty-five billion, seven hundred fifty-six million, five hundred seventy-seven thousand, eight hundred ninety-nine".