125010191 has 2 divisors, whose sum is σ = 125010192. Its totient is φ = 125010190.

The previous prime is 125010187. The next prime is 125010227. The reversal of 125010191 is 191010521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125010191 - 2² = 125010187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125010121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62505095 + 62505096.

It is an arithmetic number, because the mean of its divisors is an integer number (62505096).

Almost surely, 2^125010191 is an apocalyptic number.

125010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

125010191 is an equidigital number, since it uses as much as digits as its factorization.

125010191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 125010191 is about 11180.7956335853. The cubic root of 125010191 is about 500.0135876307.

The spelling of 125010191 in words is "one hundred twenty-five million, ten thousand, one hundred ninety-one".