125016543 has 12 divisors (see below), whose sum is σ = 180795888. Its totient is φ = 83244480.

The previous prime is 125016539. The next prime is 125016557. The reversal of 125016543 is 345610521.

125016543 is a `hidden beast` number, since 1 + 2 + 5 + 0 + 1 + 654 + 3 = 666.

It is not a de Polignac number, because 125016543 - 2² = 125016539 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125016443) 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 in 11 ways as a sum of consecutive naturals, for example, 46 + ... + 15812.

It is an arithmetic number, because the mean of its divisors is an integer number (15066324).

Almost surely, 2^125016543 is an apocalyptic number.

125016543 is a deficient number, since it is larger than the sum of its proper divisors (55779345).

125016543 is a wasteful number, since it uses less digits than its factorization.

125016543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16654 (or 16651 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 125016543 is about 11181.0796884737. The cubic root of 125016543 is about 500.0220563604.

It can be divided in two parts, 12501 and 6543, that added together give a square (19044 = 138²).

The spelling of 125016543 in words is "one hundred twenty-five million, sixteen thousand, five hundred forty-three".