159725117 has 8 divisors (see below), whose sum is σ = 162086400. Its totient is φ = 157374400.

The previous prime is 159725107. The next prime is 159725173. The reversal of 159725117 is 711527951.

It is a happy number.

159725117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 159725117 - 2⁸ = 159724861 is a prime.

It is a super-2 number, since 2×159725117² = 51024226001327378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159725107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30884 + ... + 35682.

It is an arithmetic number, because the mean of its divisors is an integer number (20260800).

Almost surely, 2^159725117 is an apocalyptic number.

It is an amenable number.

159725117 is a deficient number, since it is larger than the sum of its proper divisors (2361283).

159725117 is an equidigital number, since it uses as much as digits as its factorization.

159725117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283.

The product of its digits is 22050, while the sum is 38.

The square root of 159725117 is about 12638.2402651635. The cubic root of 159725117 is about 542.5724504172.

The spelling of 159725117 in words is "one hundred fifty-nine million, seven hundred twenty-five thousand, one hundred seventeen".