125254300121 has 2 divisors, whose sum is σ = 125254300122. Its totient is φ = 125254300120.

The previous prime is 125254300109. The next prime is 125254300139. The reversal of 125254300121 is 121003452521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106138472521 + 19115827600 = 325789^2 + 138260^2 .

It is a cyclic number.

It is not a de Polignac number, because 125254300121 - 2³⁰ = 124180558297 is a prime.

It is a super-2 number, since 2×125254300121² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (125254308121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62627150060 + 62627150061.

It is an arithmetic number, because the mean of its divisors is an integer number (62627150061).

Almost surely, 2^125254300121 is an apocalyptic number.

It is an amenable number.

125254300121 is a deficient number, since it is larger than the sum of its proper divisors (1).

125254300121 is an equidigital number, since it uses as much as digits as its factorization.

125254300121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 125254300121 its reverse (121003452521), we get a palindrome (246257752642).

The spelling of 125254300121 in words is "one hundred twenty-five billion, two hundred fifty-four million, three hundred thousand, one hundred twenty-one".