159925081 has 2 divisors, whose sum is σ = 159925082. Its totient is φ = 159925080.

The previous prime is 159925061. The next prime is 159925093. The reversal of 159925081 is 180529951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 39803481 = 10960^2 + 6309^2 .

It is a cyclic number.

It is not a de Polignac number, because 159925081 - 2⁷ = 159924953 is a prime.

It is a super-2 number, since 2×159925081² = 51152063065713122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159925061) 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 as a sum of consecutive naturals, namely, 79962540 + 79962541.

It is an arithmetic number, because the mean of its divisors is an integer number (79962541).

Almost surely, 2^159925081 is an apocalyptic number.

It is an amenable number.

159925081 is a deficient number, since it is larger than the sum of its proper divisors (1).

159925081 is an equidigital number, since it uses as much as digits as its factorization.

159925081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 159925081 is about 12646.1488604239. The cubic root of 159925081 is about 542.7987761512.

The spelling of 159925081 in words is "one hundred fifty-nine million, nine hundred twenty-five thousand, eighty-one".