125565743 has 2 divisors, whose sum is σ = 125565744. Its totient is φ = 125565742.

The previous prime is 125565733. The next prime is 125565749. The reversal of 125565743 is 347565521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125565743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125565697 and 125565706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125565749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62782871 + 62782872.

It is an arithmetic number, because the mean of its divisors is an integer number (62782872).

Almost surely, 2^125565743 is an apocalyptic number.

125565743 is a deficient number, since it is larger than the sum of its proper divisors (1).

125565743 is an equidigital number, since it uses as much as digits as its factorization.

125565743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 126000, while the sum is 38.

The square root of 125565743 is about 11205.6121207188. The cubic root of 125565743 is about 500.7531888434.

The spelling of 125565743 in words is "one hundred twenty-five million, five hundred sixty-five thousand, seven hundred forty-three".