163883280625 has 15 divisors (see below), whose sum is σ = 204801194983. Its totient is φ = 131098528000.

The previous prime is 163883280623. The next prime is 163883280641. The reversal of 163883280625 is 526082388361.

The square root of 163883280625 is 404825.

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

It can be written as a sum of positive squares in 7 ways, for example, as 25992855729 + 137890424896 = 161223^2 + 371336^2 .

It is not a de Polignac number, because 163883280625 - 2¹ = 163883280623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163883280623) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 10112529 + ... + 10128721.

Almost surely, 2^163883280625 is an apocalyptic number.

163883280625 is the 404825-th square number.

163883280625 is the 202413-rd centered octagonal number.

It is an amenable number.

163883280625 is a deficient number, since it is larger than the sum of its proper divisors (40917914358).

163883280625 is an frugal number, since it uses more digits than its factorization.

163883280625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32406 (or 16198 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 163883280625 in words is "one hundred sixty-three billion, eight hundred eighty-three million, two hundred eighty thousand, six hundred twenty-five".