125131199 has 2 divisors, whose sum is σ = 125131200. Its totient is φ = 125131198.

The previous prime is 125131189. The next prime is 125131211. The reversal of 125131199 is 991131521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125131199 - 2⁴ = 125131183 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125131129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62565599 + 62565600.

It is an arithmetic number, because the mean of its divisors is an integer number (62565600).

Almost surely, 2^125131199 is an apocalyptic number.

125131199 is a deficient number, since it is larger than the sum of its proper divisors (1).

125131199 is an equidigital number, since it uses as much as digits as its factorization.

125131199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 32.

The square root of 125131199 is about 11186.2057463646. The cubic root of 125131199 is about 500.1748708333.

The spelling of 125131199 in words is "one hundred twenty-five million, one hundred thirty-one thousand, one hundred ninety-nine".