125206313 has 2 divisors, whose sum is σ = 125206314. Its totient is φ = 125206312.

The previous prime is 125206243. The next prime is 125206321. The reversal of 125206313 is 313602521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125171344 + 34969 = 11188^2 + 187^2 .

It is a cyclic number.

It is not a de Polignac number, because 125206313 - 2¹⁴ = 125189929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (125206363) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62603156 + 62603157.

It is an arithmetic number, because the mean of its divisors is an integer number (62603157).

Almost surely, 2^125206313 is an apocalyptic number.

It is an amenable number.

125206313 is a deficient number, since it is larger than the sum of its proper divisors (1).

125206313 is an equidigital number, since it uses as much as digits as its factorization.

125206313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 125206313 is about 11189.5626813562. The cubic root of 125206313 is about 500.2749327962.

Adding to 125206313 its reverse (313602521), we get a palindrome (438808834).

The spelling of 125206313 in words is "one hundred twenty-five million, two hundred six thousand, three hundred thirteen".