125747542873 has 2 divisors, whose sum is σ = 125747542874. Its totient is φ = 125747542872.

The previous prime is 125747542861. The next prime is 125747542903. The reversal of 125747542873 is 378245747521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120442314304 + 5305228569 = 347048^2 + 72837^2 .

It is an emirp because it is prime and its reverse (378245747521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125747542873 is a prime.

It is not a weakly prime, because it can be changed into another prime (125747542853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62873771436 + 62873771437.

It is an arithmetic number, because the mean of its divisors is an integer number (62873771437).

Almost surely, 2^125747542873 is an apocalyptic number.

It is an amenable number.

125747542873 is a deficient number, since it is larger than the sum of its proper divisors (1).

125747542873 is an equidigital number, since it uses as much as digits as its factorization.

125747542873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13171200, while the sum is 55.

The spelling of 125747542873 in words is "one hundred twenty-five billion, seven hundred forty-seven million, five hundred forty-two thousand, eight hundred seventy-three".