125539111 has 2 divisors, whose sum is σ = 125539112. Its totient is φ = 125539110.

The previous prime is 125539109. The next prime is 125539121. The reversal of 125539111 is 111935521.

It is a weak prime.

It is an emirp because it is prime and its reverse (111935521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125539111 - 2¹ = 125539109 is a prime.

Together with 125539109, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 125539111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125539121) 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, 62769555 + 62769556.

It is an arithmetic number, because the mean of its divisors is an integer number (62769556).

Almost surely, 2^125539111 is an apocalyptic number.

125539111 is a deficient number, since it is larger than the sum of its proper divisors (1).

125539111 is an equidigital number, since it uses as much as digits as its factorization.

125539111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 28.

The square root of 125539111 is about 11204.4237245831. The cubic root of 125539111 is about 500.7177837466.

The spelling of 125539111 in words is "one hundred twenty-five million, five hundred thirty-nine thousand, one hundred eleven".