159871725 has 60 divisors (see below), whose sum is σ = 318970036. Its totient is φ = 78693120.

The previous prime is 159871711. The next prime is 159871729. The reversal of 159871725 is 527178951.

It can be written as a sum of positive squares in 6 ways, for example, as 1565001 + 158306724 = 1251^2 + 12582^2 .

It is not a de Polignac number, because 159871725 - 2⁶ = 159871661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159871729) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 23289 + ... + 29361.

Almost surely, 2^159871725 is an apocalyptic number.

159871725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159871725 is a deficient number, since it is larger than the sum of its proper divisors (159098311).

159871725 is a wasteful number, since it uses less digits than its factorization.

159871725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108 (or 6094 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

The square root of 159871725 is about 12644.0391093985. The cubic root of 159871725 is about 542.7384045640.

The spelling of 159871725 in words is "one hundred fifty-nine million, eight hundred seventy-one thousand, seven hundred twenty-five".