125528111 has 2 divisors, whose sum is σ = 125528112. Its totient is φ = 125528110.

The previous prime is 125528107. The next prime is 125528113. The reversal of 125528111 is 111825521.

It is a strong prime.

It is an emirp because it is prime and its reverse (111825521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125528111 - 2² = 125528107 is a prime.

Together with 125528113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125528113) 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, 62764055 + 62764056.

It is an arithmetic number, because the mean of its divisors is an integer number (62764056).

Almost surely, 2^125528111 is an apocalyptic number.

125528111 is a deficient number, since it is larger than the sum of its proper divisors (1).

125528111 is an equidigital number, since it uses as much as digits as its factorization.

125528111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 26.

The square root of 125528111 is about 11203.9328362857. The cubic root of 125528111 is about 500.7031586722.

The spelling of 125528111 in words is "one hundred twenty-five million, five hundred twenty-eight thousand, one hundred eleven".