125126251 has 2 divisors, whose sum is σ = 125126252. Its totient is φ = 125126250.

The previous prime is 125126249. The next prime is 125126291. The reversal of 125126251 is 152621521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125126251 - 2¹ = 125126249 is a prime.

Together with 125126249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (125126231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62563125 + 62563126.

It is an arithmetic number, because the mean of its divisors is an integer number (62563126).

Almost surely, 2^125126251 is an apocalyptic number.

125126251 is a deficient number, since it is larger than the sum of its proper divisors (1).

125126251 is an equidigital number, since it uses as much as digits as its factorization.

125126251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 125126251 is about 11185.9845789273. The cubic root of 125126251 is about 500.1682780253.

Adding to 125126251 its reverse (152621521), we get a palindrome (277747772).

The spelling of 125126251 in words is "one hundred twenty-five million, one hundred twenty-six thousand, two hundred fifty-one".