216333125 has 10 divisors (see below), whose sum is σ = 270330654. Its totient is φ = 173066000.

The previous prime is 216333083. The next prime is 216333133. The reversal of 216333125 is 521333612.

It can be written as a sum of positive squares in 5 ways, for example, as 134050084 + 82283041 = 11578^2 + 9071^2 .

It is not a de Polignac number, because 216333125 - 2¹⁶ = 216267589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216333094 and 216333103.

It is a congruent 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, 172442 + ... + 173691.

Almost surely, 2^216333125 is an apocalyptic number.

216333125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216333125 is a deficient number, since it is larger than the sum of its proper divisors (53997529).

216333125 is an frugal number, since it uses more digits than its factorization.

216333125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346153 (or 346138 counting only the distinct ones).

The product of its digits is 3240, while the sum is 26.

The square root of 216333125 is about 14708.2672330904. The cubic root of 216333125 is about 600.3082906417.

Adding to 216333125 its reverse (521333612), we get a palindrome (737666737).

The spelling of 216333125 in words is "two hundred sixteen million, three hundred thirty-three thousand, one hundred twenty-five".