125777540099 has 2 divisors, whose sum is σ = 125777540100. Its totient is φ = 125777540098.

The previous prime is 125777540069. The next prime is 125777540111. The reversal of 125777540099 is 990045777521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125777540099 - 2³² = 121482572803 is a prime.

It is not a weakly prime, because it can be changed into another prime (125777540069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62888770049 + 62888770050.

It is an arithmetic number, because the mean of its divisors is an integer number (62888770050).

Almost surely, 2^125777540099 is an apocalyptic number.

125777540099 is a deficient number, since it is larger than the sum of its proper divisors (1).

125777540099 is an equidigital number, since it uses as much as digits as its factorization.

125777540099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5556600, while the sum is 56.

The spelling of 125777540099 in words is "one hundred twenty-five billion, seven hundred seventy-seven million, five hundred forty thousand, ninety-nine".