216023025 has 24 divisors (see below), whose sum is σ = 361182240. Its totient is φ = 113914240.

The previous prime is 216022979. The next prime is 216023047. The reversal of 216023025 is 520320612.

216023025 = 65² + 66² + ... + 865².

It is not a de Polignac number, because 216023025 - 2¹³ = 216014833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216022992 and 216023010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9507 + ... + 22856.

It is an arithmetic number, because the mean of its divisors is an integer number (15049260).

Almost surely, 2^216023025 is an apocalyptic number.

216023025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216023025 is a deficient number, since it is larger than the sum of its proper divisors (145159215).

216023025 is a wasteful number, since it uses less digits than its factorization.

216023025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32465 (or 32460 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 216023025 is about 14697.7217622324. The cubic root of 216023025 is about 600.0213186870.

Adding to 216023025 its reverse (520320612), we get a palindrome (736343637).

The spelling of 216023025 in words is "two hundred sixteen million, twenty-three thousand, twenty-five".