125646523 has 2 divisors, whose sum is σ = 125646524. Its totient is φ = 125646522.

The previous prime is 125646481. The next prime is 125646571. The reversal of 125646523 is 325646521.

It is a weak prime.

It is an emirp because it is prime and its reverse (325646521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125646523 is a prime.

It is not a weakly prime, because it can be changed into another prime (125646583) 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, 62823261 + 62823262.

It is an arithmetic number, because the mean of its divisors is an integer number (62823262).

Almost surely, 2^125646523 is an apocalyptic number.

125646523 is a deficient number, since it is larger than the sum of its proper divisors (1).

125646523 is an equidigital number, since it uses as much as digits as its factorization.

125646523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

The square root of 125646523 is about 11209.2159850723. The cubic root of 125646523 is about 500.8605487287.

The spelling of 125646523 in words is "one hundred twenty-five million, six hundred forty-six thousand, five hundred twenty-three".