159725 has 6 divisors (see below), whose sum is σ = 198090. Its totient is φ = 127760.

The previous prime is 159721. The next prime is 159737. The reversal of 159725 is 527951.

It can be written as a sum of positive squares in 3 ways, for example, as 2116 + 157609 = 46^2 + 397^2 .

It is not a de Polignac number, because 159725 - 2² = 159721 is a prime.

It is a plaindrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3170 + ... + 3219.

It is an arithmetic number, because the mean of its divisors is an integer number (33015).

2¹⁵⁹⁷²⁵ is an apocalyptic number.

It is an amenable number.

159725 is a deficient number, since it is larger than the sum of its proper divisors (38365).

159725 is an equidigital number, since it uses as much as digits as its factorization.

159725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6399 (or 6394 counting only the distinct ones).

The product of its digits is 3150, while the sum is 29.

The square root of 159725 is about 399.6561021679. The cubic root of 159725 is about 54.2572317938.

The spelling of 159725 in words is "one hundred fifty-nine thousand, seven hundred twenty-five".