125242511454017 has 2 divisors, whose sum is σ = 125242511454018. Its totient is φ = 125242511454016.

The previous prime is 125242511453971. The next prime is 125242511454019. The reversal of 125242511454017 is 710454115242521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92373800654641 + 32868710799376 = 9611129^2 + 5733124^2 .

It is a cyclic number.

It is not a de Polignac number, because 125242511454017 - 2³⁴ = 125225331584833 is a prime.

Together with 125242511454019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125242511454019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62621255727008 + 62621255727009.

It is an arithmetic number, because the mean of its divisors is an integer number (62621255727009).

Almost surely, 2^{125242511454017} is an apocalyptic number.

It is an amenable number.

125242511454017 is a deficient number, since it is larger than the sum of its proper divisors (1).

125242511454017 is an equidigital number, since it uses as much as digits as its factorization.

125242511454017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448000, while the sum is 44.

Adding to 125242511454017 its reverse (710454115242521), we get a palindrome (835696626696538).

The spelling of 125242511454017 in words is "one hundred twenty-five trillion, two hundred forty-two billion, five hundred eleven million, four hundred fifty-four thousand, seventeen".