125512147 has 2 divisors, whose sum is σ = 125512148. Its totient is φ = 125512146.

The previous prime is 125512091. The next prime is 125512181. The reversal of 125512147 is 741215521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125512147 is a prime.

It is not a weakly prime, because it can be changed into another prime (125512187) 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, 62756073 + 62756074.

It is an arithmetic number, because the mean of its divisors is an integer number (62756074).

Almost surely, 2^125512147 is an apocalyptic number.

125512147 is a deficient number, since it is larger than the sum of its proper divisors (1).

125512147 is an equidigital number, since it uses as much as digits as its factorization.

125512147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2800, while the sum is 28.

The square root of 125512147 is about 11203.2203852285. The cubic root of 125512147 is about 500.6819321808.

Adding to 125512147 its reverse (741215521), we get a palindrome (866727668).

The spelling of 125512147 in words is "one hundred twenty-five million, five hundred twelve thousand, one hundred forty-seven".