216827025 has 24 divisors (see below), whose sum is σ = 359530560. Its totient is φ = 115304640.

The previous prime is 216826979. The next prime is 216827041. The reversal of 216827025 is 520728612.

It is not a de Polignac number, because 216827025 - 2²⁷ = 82609297 is a prime.

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, 22899 + ... + 30951.

It is an arithmetic number, because the mean of its divisors is an integer number (14980440).

Almost surely, 2^216827025 is an apocalyptic number.

216827025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216827025 is a deficient number, since it is larger than the sum of its proper divisors (142703535).

216827025 is a wasteful number, since it uses less digits than its factorization.

216827025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8425 (or 8420 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 216827025 is about 14725.0475381236. The cubic root of 216827025 is about 600.7647886386.

The spelling of 216827025 in words is "two hundred sixteen million, eight hundred twenty-seven thousand, twenty-five".