189725005 has 8 divisors (see below), whose sum is σ = 227858400. Its totient is φ = 151654416.

The previous prime is 189724963. The next prime is 189725021. The reversal of 189725005 is 500527981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189725005 is a prime.

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 in 7 ways as a sum of consecutive naturals, for example, 8775 + ... + 21364.

It is an arithmetic number, because the mean of its divisors is an integer number (28482300).

Almost surely, 2^189725005 is an apocalyptic number.

It is an amenable number.

189725005 is a deficient number, since it is larger than the sum of its proper divisors (38133395).

189725005 is a wasteful number, since it uses less digits than its factorization.

189725005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31403.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 189725005 is about 13774.0700230542. The cubic root of 189725005 is about 574.6122199514.

The spelling of 189725005 in words is "one hundred eighty-nine million, seven hundred twenty-five thousand, five".