125971187 has 2 divisors, whose sum is σ = 125971188. Its totient is φ = 125971186.

The previous prime is 125971177. The next prime is 125971193. The reversal of 125971187 is 781179521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125971187 - 2⁴ = 125971171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125971117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62985593 + 62985594.

It is an arithmetic number, because the mean of its divisors is an integer number (62985594).

Almost surely, 2^125971187 is an apocalyptic number.

125971187 is a deficient number, since it is larger than the sum of its proper divisors (1).

125971187 is an equidigital number, since it uses as much as digits as its factorization.

125971187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 41.

The square root of 125971187 is about 11223.6886539141. The cubic root of 125971187 is about 501.2915767861.

The spelling of 125971187 in words is "one hundred twenty-five million, nine hundred seventy-one thousand, one hundred eighty-seven".