125171099 has 2 divisors, whose sum is σ = 125171100. Its totient is φ = 125171098.

The previous prime is 125171089. The next prime is 125171141. The reversal of 125171099 is 990171521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125171099 is a prime.

It is equal to p_7119278 and since 125171099 and 7119278 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (125171089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62585549 + 62585550.

It is an arithmetic number, because the mean of its divisors is an integer number (62585550).

Almost surely, 2^125171099 is an apocalyptic number.

125171099 is a deficient number, since it is larger than the sum of its proper divisors (1).

125171099 is an equidigital number, since it uses as much as digits as its factorization.

125171099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 35.

The square root of 125171099 is about 11187.9890507633. The cubic root of 125171099 is about 500.2280279907.

The spelling of 125171099 in words is "one hundred twenty-five million, one hundred seventy-one thousand, ninety-nine".