159555825 has 240 divisors, whose sum is σ = 378100800. Its totient is φ = 65318400.

The previous prime is 159555821. The next prime is 159555827. The reversal of 159555825 is 528555951.

159555825 is a `hidden beast` number, since 1 + 5 + 95 + 558 + 2 + 5 = 666.

It is not a de Polignac number, because 159555825 - 2² = 159555821 is a prime.

It is a super-2 number, since 2×159555825² = 50916122582861250, which contains 22 as substring.

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

Its product of digits (450000) is a multiple of the sum of its prime divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159555821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 5501911 + ... + 5501939.

It is an arithmetic number, because the mean of its divisors is an integer number (1575420).

Almost surely, 2^159555825 is an apocalyptic number.

159555825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

159555825 is an abundant number, since it is smaller than the sum of its proper divisors (218544975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159555825 is a wasteful number, since it uses less digits than its factorization.

159555825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 80 counting only the distinct ones).

The product of its digits is 450000, while the sum is 45.

The square root of 159555825 is about 12631.5408798768. The cubic root of 159555825 is about 542.3806925444.

The spelling of 159555825 in words is "one hundred fifty-nine million, five hundred fifty-five thousand, eight hundred twenty-five".