216360625 has 40 divisors (see below), whose sum is σ = 300903680. Its totient is φ = 154440000.

The previous prime is 216360587. The next prime is 216360631. The reversal of 216360625 is 526063612.

It is not a de Polignac number, because 216360625 - 2⁹ = 216360113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 251446 + ... + 252304.

It is an arithmetic number, because the mean of its divisors is an integer number (7522592).

Almost surely, 2^216360625 is an apocalyptic number.

216360625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216360625 is a deficient number, since it is larger than the sum of its proper divisors (84543055).

216360625 is an equidigital number, since it uses as much as digits as its factorization.

216360625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 216360625 is about 14709.2020517770. The cubic root of 216360625 is about 600.3337263805. Note that the first 3 decimals are identical.

The spelling of 216360625 in words is "two hundred sixteen million, three hundred sixty thousand, six hundred twenty-five".