125125199 has 2 divisors, whose sum is σ = 125125200. Its totient is φ = 125125198.

The previous prime is 125125109. The next prime is 125125201. The reversal of 125125199 is 991521521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125125199 - 2¹² = 125121103 is a prime.

Together with 125125201, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125125109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62562599 + 62562600.

It is an arithmetic number, because the mean of its divisors is an integer number (62562600).

Almost surely, 2^125125199 is an apocalyptic number.

125125199 is a deficient number, since it is larger than the sum of its proper divisors (1).

125125199 is an equidigital number, since it uses as much as digits as its factorization.

125125199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 35.

The square root of 125125199 is about 11185.9375556991. The cubic root of 125125199 is about 500.1668762984.

The spelling of 125125199 in words is "one hundred twenty-five million, one hundred twenty-five thousand, one hundred ninety-nine".