125121317 has 2 divisors, whose sum is σ = 125121318. Its totient is φ = 125121316.

The previous prime is 125121281. The next prime is 125121329. The reversal of 125121317 is 713121521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111534721 + 13586596 = 10561^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 125121317 - 2⁶ = 125121253 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125121292 and 125121301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125121917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62560658 + 62560659.

It is an arithmetic number, because the mean of its divisors is an integer number (62560659).

Almost surely, 2^125121317 is an apocalyptic number.

It is an amenable number.

125121317 is a deficient number, since it is larger than the sum of its proper divisors (1).

125121317 is an equidigital number, since it uses as much as digits as its factorization.

125121317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 420, while the sum is 23.

The square root of 125121317 is about 11185.7640329125. The cubic root of 125121317 is about 500.1617036982.

Adding to 125121317 its reverse (713121521), we get a palindrome (838242838).

The spelling of 125121317 in words is "one hundred twenty-five million, one hundred twenty-one thousand, three hundred seventeen".