125549747 has 2 divisors, whose sum is σ = 125549748. Its totient is φ = 125549746.

The previous prime is 125549741. The next prime is 125549761. The reversal of 125549747 is 747945521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125549747 - 2⁴ = 125549731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125549698 and 125549707.

It is not a weakly prime, because it can be changed into another prime (125549741) 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, 62774873 + 62774874.

It is an arithmetic number, because the mean of its divisors is an integer number (62774874).

Almost surely, 2^125549747 is an apocalyptic number.

125549747 is a deficient number, since it is larger than the sum of its proper divisors (1).

125549747 is an equidigital number, since it uses as much as digits as its factorization.

125549747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 125549747 is about 11204.8983484903. The cubic root of 125549747 is about 500.7319240516.

The spelling of 125549747 in words is "one hundred twenty-five million, five hundred forty-nine thousand, seven hundred forty-seven".