125127137 has 2 divisors, whose sum is σ = 125127138. Its totient is φ = 125127136.

The previous prime is 125127133. The next prime is 125127143. The reversal of 125127137 is 731721521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118178641 + 6948496 = 10871^2 + 2636^2 .

It is a cyclic number.

It is not a de Polignac number, because 125127137 - 2² = 125127133 is a prime.

It is not a weakly prime, because it can be changed into another prime (125127133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62563568 + 62563569.

It is an arithmetic number, because the mean of its divisors is an integer number (62563569).

Almost surely, 2^125127137 is an apocalyptic number.

It is an amenable number.

125127137 is a deficient number, since it is larger than the sum of its proper divisors (1).

125127137 is an equidigital number, since it uses as much as digits as its factorization.

125127137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2940, while the sum is 29.

The square root of 125127137 is about 11186.0241819871. The cubic root of 125127137 is about 500.1694585611.

Adding to 125127137 its reverse (731721521), we get a palindrome (856848658).

The spelling of 125127137 in words is "one hundred twenty-five million, one hundred twenty-seven thousand, one hundred thirty-seven".