199725559 has 8 divisors (see below), whose sum is σ = 219143952. Its totient is φ = 180517440.

The previous prime is 199725557. The next prime is 199725569. The reversal of 199725559 is 955527991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199725559 - 2¹ = 199725557 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 (199725551) 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 in 7 ways as a sum of consecutive naturals, for example, 50574 + ... + 54379.

It is an arithmetic number, because the mean of its divisors is an integer number (27392994).

Almost surely, 2^199725559 is an apocalyptic number.

199725559 is a deficient number, since it is larger than the sum of its proper divisors (19418393).

199725559 is a wasteful number, since it uses less digits than its factorization.

199725559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105137.

The product of its digits is 1275750, while the sum is 52.

The square root of 199725559 is about 14132.4293382277. The cubic root of 199725559 is about 584.5359350814.

It can be divided in two parts, 1997 and 25559, that added together give a square (27556 = 166²).

The spelling of 199725559 in words is "one hundred ninety-nine million, seven hundred twenty-five thousand, five hundred fifty-nine".