125681783 has 2 divisors, whose sum is σ = 125681784. Its totient is φ = 125681782.

The previous prime is 125681779. The next prime is 125681849. The reversal of 125681783 is 387186521.

It is a weak prime.

It is an emirp because it is prime and its reverse (387186521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125681783 - 2² = 125681779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125681783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125681723) 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, 62840891 + 62840892.

It is an arithmetic number, because the mean of its divisors is an integer number (62840892).

Almost surely, 2^125681783 is an apocalyptic number.

125681783 is a deficient number, since it is larger than the sum of its proper divisors (1).

125681783 is an equidigital number, since it uses as much as digits as its factorization.

125681783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 125681783 is about 11210.7886876883. The cubic root of 125681783 is about 500.9073962679.

The spelling of 125681783 in words is "one hundred twenty-five million, six hundred eighty-one thousand, seven hundred eighty-three".