163545625 has 10 divisors (see below), whose sum is σ = 204367394. Its totient is φ = 130836000.

The previous prime is 163545601. The next prime is 163545637. The reversal of 163545625 is 526545361.

163545625 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 26842761 + 136702864 = 5181^2 + 11692^2 .

It is not a de Polignac number, because 163545625 - 2¹⁷ = 163414553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 130212 + ... + 131461.

Almost surely, 2^163545625 is an apocalyptic number.

It is an amenable number.

163545625 is a deficient number, since it is larger than the sum of its proper divisors (40821769).

163545625 is an frugal number, since it uses more digits than its factorization.

163545625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261693 (or 261678 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 163545625 is about 12788.4958067788. The cubic root of 163545625 is about 546.8643889098.

The spelling of 163545625 in words is "one hundred sixty-three million, five hundred forty-five thousand, six hundred twenty-five".