216260025 has 12 divisors (see below), whose sum is σ = 357550032. Its totient is φ = 115338640.

The previous prime is 216260017. The next prime is 216260059. The reversal of 216260025 is 520062612.

It is not a de Polignac number, because 216260025 - 2³ = 216260017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216259977 and 216260004.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1441659 + ... + 1441808.

It is an arithmetic number, because the mean of its divisors is an integer number (29795836).

Almost surely, 2^216260025 is an apocalyptic number.

216260025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216260025 is a deficient number, since it is larger than the sum of its proper divisors (141290007).

216260025 is a wasteful number, since it uses less digits than its factorization.

216260025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883480 (or 2883475 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 216260025 is about 14705.7820261284. The cubic root of 216260025 is about 600.2406673414.

The spelling of 216260025 in words is "two hundred sixteen million, two hundred sixty thousand, twenty-five".