125136199 has 4 divisors (see below), whose sum is σ = 125196736. Its totient is φ = 125075664.

The previous prime is 125136191. The next prime is 125136203. The reversal of 125136199 is 991631521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991631521 = 47 ⋅21098543.

It is a cyclic number.

It is not a de Polignac number, because 125136199 - 2³ = 125136191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125136191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27054 + ... + 31339.

It is an arithmetic number, because the mean of its divisors is an integer number (31299184).

Almost surely, 2^125136199 is an apocalyptic number.

125136199 is a deficient number, since it is larger than the sum of its proper divisors (60537).

125136199 is an equidigital number, since it uses as much as digits as its factorization.

125136199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60536.

The product of its digits is 14580, while the sum is 37.

The square root of 125136199 is about 11186.4292336742. The cubic root of 125136199 is about 500.1815327504.

The spelling of 125136199 in words is "one hundred twenty-five million, one hundred thirty-six thousand, one hundred ninety-nine".