127725447349 has 2 divisors, whose sum is σ = 127725447350. Its totient is φ = 127725447348.

The previous prime is 127725447293. The next prime is 127725447371. The reversal of 127725447349 is 943744527721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127641852900 + 83594449 = 357270^2 + 9143^2 .

It is a cyclic number.

It is not a de Polignac number, because 127725447349 - 2²⁷ = 127591229621 is a prime.

It is a super-2 number, since 2×127725447349² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 127725447349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127725447379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63862723674 + 63862723675.

It is an arithmetic number, because the mean of its divisors is an integer number (63862723675).

Almost surely, 2^127725447349 is an apocalyptic number.

It is an amenable number.

127725447349 is a deficient number, since it is larger than the sum of its proper divisors (1).

127725447349 is an equidigital number, since it uses as much as digits as its factorization.

127725447349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 55.

The spelling of 127725447349 in words is "one hundred twenty-seven billion, seven hundred twenty-five million, four hundred forty-seven thousand, three hundred forty-nine".