125378199 has 10 divisors (see below), whose sum is σ = 187293480. Its totient is φ = 83585412.

The previous prime is 125378191. The next prime is 125378203. The reversal of 125378199 is 991873521.

It is not a de Polignac number, because 125378199 - 2³ = 125378191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125378191) 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 9 ways as a sum of consecutive naturals, for example, 773859 + ... + 774020.

It is an arithmetic number, because the mean of its divisors is an integer number (18729348).

Almost surely, 2^125378199 is an apocalyptic number.

125378199 is a deficient number, since it is larger than the sum of its proper divisors (61915281).

125378199 is an equidigital number, since it uses as much as digits as its factorization.

125378199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547891 (or 1547882 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 125378199 is about 11197.2406868835. The cubic root of 125378199 is about 500.5037576194.

It can be divided in two parts, 12537 and 8199, that added together give a 4-th power (20736 = 12⁴).

The spelling of 125378199 in words is "one hundred twenty-five million, three hundred seventy-eight thousand, one hundred ninety-nine".