125015243 has 2 divisors, whose sum is σ = 125015244. Its totient is φ = 125015242.

The previous prime is 125015221. The next prime is 125015251. The reversal of 125015243 is 342510521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125015243 - 2⁸ = 125014987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125015203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62507621 + 62507622.

It is an arithmetic number, because the mean of its divisors is an integer number (62507622).

Almost surely, 2^125015243 is an apocalyptic number.

125015243 is a deficient number, since it is larger than the sum of its proper divisors (1).

125015243 is an equidigital number, since it uses as much as digits as its factorization.

125015243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 125015243 is about 11181.0215544019. The cubic root of 125015243 is about 500.0203231739.

Adding to 125015243 its reverse (342510521), we get a palindrome (467525764).

The spelling of 125015243 in words is "one hundred twenty-five million, fifteen thousand, two hundred forty-three".