125551198 has 4 divisors (see below), whose sum is σ = 188326800. Its totient is φ = 62775598.

The previous prime is 125551163. The next prime is 125551201. The reversal of 125551198 is 891155521.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 31387798 + ... + 31387801.

It is an arithmetic number, because the mean of its divisors is an integer number (47081700).

Almost surely, 2^125551198 is an apocalyptic number.

125551198 is a deficient number, since it is larger than the sum of its proper divisors (62775602).

125551198 is an equidigital number, since it uses as much as digits as its factorization.

125551198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62775601.

The product of its digits is 18000, while the sum is 37.

The square root of 125551198 is about 11204.9630967710. The cubic root of 125551198 is about 500.7338530591.

The spelling of 125551198 in words is "one hundred twenty-five million, five hundred fifty-one thousand, one hundred ninety-eight".