125211113 has 2 divisors, whose sum is σ = 125211114. Its totient is φ = 125211112.

The previous prime is 125211049. The next prime is 125211169. The reversal of 125211113 is 311112521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116467264 + 8743849 = 10792^2 + 2957^2 .

It is an emirp because it is prime and its reverse (311112521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125211113 - 2⁶ = 125211049 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125211091 and 125211100.

It is not a weakly prime, because it can be changed into another prime (125211413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62605556 + 62605557.

It is an arithmetic number, because the mean of its divisors is an integer number (62605557).

Almost surely, 2^125211113 is an apocalyptic number.

It is an amenable number.

125211113 is a deficient number, since it is larger than the sum of its proper divisors (1).

125211113 is an equidigital number, since it uses as much as digits as its factorization.

125211113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 17.

The square root of 125211113 is about 11189.7771648948. Note that the first 3 decimals coincide. The cubic root of 125211113 is about 500.2813256820.

Adding to 125211113 its reverse (311112521), we get a palindrome (436323634).

It can be divided in two parts, 12 and 5211113, that added together give a palindrome (5211125).

The spelling of 125211113 in words is "one hundred twenty-five million, two hundred eleven thousand, one hundred thirteen".