216300925 has 6 divisors (see below), whose sum is σ = 268213178. Its totient is φ = 173040720.

The previous prime is 216300923. The next prime is 216300967. The reversal of 216300925 is 529003612.

It can be written as a sum of positive squares in 3 ways, for example, as 63457156 + 152843769 = 7966^2 + 12363^2 .

It is not a de Polignac number, because 216300925 - 2¹ = 216300923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216300893 and 216300902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216300923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4325994 + ... + 4326043.

Almost surely, 2^216300925 is an apocalyptic number.

216300925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216300925 is a deficient number, since it is larger than the sum of its proper divisors (51912253).

216300925 is an equidigital number, since it uses as much as digits as its factorization.

216300925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8652047 (or 8652042 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 216300925 is about 14707.1725698722. The cubic root of 216300925 is about 600.2785049642.

The spelling of 216300925 in words is "two hundred sixteen million, three hundred thousand, nine hundred twenty-five".