125647747 has 2 divisors, whose sum is σ = 125647748. Its totient is φ = 125647746.

The previous prime is 125647729. The next prime is 125647759. The reversal of 125647747 is 747746521.

It is a strong prime.

It is an emirp because it is prime and its reverse (747746521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125647747 is a prime.

It is not a weakly prime, because it can be changed into another prime (125647787) 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, 62823873 + 62823874.

It is an arithmetic number, because the mean of its divisors is an integer number (62823874).

Almost surely, 2^125647747 is an apocalyptic number.

125647747 is a deficient number, since it is larger than the sum of its proper divisors (1).

125647747 is an equidigital number, since it uses as much as digits as its factorization.

125647747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329280, while the sum is 43.

The square root of 125647747 is about 11209.2705828702. The cubic root of 125647747 is about 500.8621751203.

The spelling of 125647747 in words is "one hundred twenty-five million, six hundred forty-seven thousand, seven hundred forty-seven".