125321113 has 2 divisors, whose sum is σ = 125321114. Its totient is φ = 125321112.

The previous prime is 125321111. The next prime is 125321117. The reversal of 125321113 is 311123521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125171344 + 149769 = 11188^2 + 387^2 .

It is a cyclic number.

It is not a de Polignac number, because 125321113 - 2¹ = 125321111 is a prime.

Together with 125321111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125321111) 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, 62660556 + 62660557.

It is an arithmetic number, because the mean of its divisors is an integer number (62660557).

Almost surely, 2^125321113 is an apocalyptic number.

It is an amenable number.

125321113 is a deficient number, since it is larger than the sum of its proper divisors (1).

125321113 is an equidigital number, since it uses as much as digits as its factorization.

125321113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 19.

The square root of 125321113 is about 11194.6912864983. The cubic root of 125321113 is about 500.4277845630.

Adding to 125321113 its reverse (311123521), we get a palindrome (436444634).

It can be divided in two parts, 1253 and 21113, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 125321113 in words is "one hundred twenty-five million, three hundred twenty-one thousand, one hundred thirteen".