125737543 has 2 divisors, whose sum is σ = 125737544. Its totient is φ = 125737542.

The previous prime is 125737537. The next prime is 125737561. The reversal of 125737543 is 345737521.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125737543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125737523) 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, 62868771 + 62868772.

It is an arithmetic number, because the mean of its divisors is an integer number (62868772).

Almost surely, 2^125737543 is an apocalyptic number.

125737543 is a deficient number, since it is larger than the sum of its proper divisors (1).

125737543 is an equidigital number, since it uses as much as digits as its factorization.

125737543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 88200, while the sum is 37.

The square root of 125737543 is about 11213.2753020694. The cubic root of 125737543 is about 500.9814628674.

The spelling of 125737543 in words is "one hundred twenty-five million, seven hundred thirty-seven thousand, five hundred forty-three".