125641871 has 2 divisors, whose sum is σ = 125641872. Its totient is φ = 125641870.

The previous prime is 125641819. The next prime is 125641909. The reversal of 125641871 is 178146521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125641871 - 2⁶ = 125641807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125691871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62820935 + 62820936.

It is an arithmetic number, because the mean of its divisors is an integer number (62820936).

Almost surely, 2^125641871 is an apocalyptic number.

125641871 is a deficient number, since it is larger than the sum of its proper divisors (1).

125641871 is an equidigital number, since it uses as much as digits as its factorization.

125641871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 35.

The square root of 125641871 is about 11209.0084753291. The cubic root of 125641871 is about 500.8543672816.

The spelling of 125641871 in words is "one hundred twenty-five million, six hundred forty-one thousand, eight hundred seventy-one".