159236912025 has 81 divisors (see below), whose sum is σ = 293535998301. Its totient is φ = 82516121280.

The previous prime is 159236912017. The next prime is 159236912047. The reversal of 159236912025 is 520219632951.

The square root of 159236912025 is 399045.

It is a perfect power (a square), and thus also a powerful number.

159236912025 is a `hidden beast` number, since 1 + 592 + 36 + 9 + 1 + 2 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 15116456601 + 144120455424 = 122949^2 + 379632^2 .

It is not a de Polignac number, because 159236912025 - 2³ = 159236912017 is a prime.

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

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 80 ways as a sum of consecutive naturals, for example, 221469616 + ... + 221470334.

Almost surely, 2^159236912025 is an apocalyptic number.

159236912025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

159236912025 is the 399045-th square number.

159236912025 is the 199523-rd centered octagonal number.

It is an amenable number.

159236912025 is a deficient number, since it is larger than the sum of its proper divisors (134299086276).

159236912025 is an frugal number, since it uses more digits than its factorization.

159236912025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 159236912025 in words is "one hundred fifty-nine billion, two hundred thirty-six million, nine hundred twelve thousand, twenty-five".