127725911 has 2 divisors, whose sum is σ = 127725912. Its totient is φ = 127725910.

The previous prime is 127725853. The next prime is 127725943. The reversal of 127725911 is 119527721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 127725911 - 2¹⁰ = 127724887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127725971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63862955 + 63862956.

It is an arithmetic number, because the mean of its divisors is an integer number (63862956).

Almost surely, 2^127725911 is an apocalyptic number.

127725911 is a deficient number, since it is larger than the sum of its proper divisors (1).

127725911 is an equidigital number, since it uses as much as digits as its factorization.

127725911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 35.

The square root of 127725911 is about 11301.5888705969. The cubic root of 127725911 is about 503.6084436225.

The spelling of 127725911 in words is "one hundred twenty-seven million, seven hundred twenty-five thousand, nine hundred eleven".