125712271 has 2 divisors, whose sum is σ = 125712272. Its totient is φ = 125712270.

The previous prime is 125712269. The next prime is 125712289. The reversal of 125712271 is 172217521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125712271 - 2¹ = 125712269 is a prime.

Together with 125712269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125710271) 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, 62856135 + 62856136.

It is an arithmetic number, because the mean of its divisors is an integer number (62856136).

Almost surely, 2^125712271 is an apocalyptic number.

125712271 is a deficient number, since it is larger than the sum of its proper divisors (1).

125712271 is an equidigital number, since it uses as much as digits as its factorization.

125712271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1960, while the sum is 28.

The square root of 125712271 is about 11212.1483668385. The cubic root of 125712271 is about 500.9478965155.

Adding to 125712271 its reverse (172217521), we get a palindrome (297929792).

The spelling of 125712271 in words is "one hundred twenty-five million, seven hundred twelve thousand, two hundred seventy-one".