163329025 has 12 divisors (see below), whose sum is σ = 205850044. Its totient is φ = 128520000.

The previous prime is 163329017. The next prime is 163329037. The reversal of 163329025 is 520923361.

It can be written as a sum of positive squares in 6 ways, for example, as 75550864 + 87778161 = 8692^2 + 9369^2 .

It is not a de Polignac number, because 163329025 - 2³ = 163329017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 52026 + ... + 55075.

Almost surely, 2^163329025 is an apocalyptic number.

It is an amenable number.

163329025 is a deficient number, since it is larger than the sum of its proper divisors (42521019).

163329025 is a wasteful number, since it uses less digits than its factorization.

163329025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107172 (or 107167 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 163329025 is about 12780.0244522458. The cubic root of 163329025 is about 546.6228596580.

The spelling of 163329025 in words is "one hundred sixty-three million, three hundred twenty-nine thousand, twenty-five".