212055225 has 12 divisors (see below), whose sum is σ = 350598096. Its totient is φ = 113096080.

The previous prime is 212055209. The next prime is 212055241. The reversal of 212055225 is 522550212.

It is an interprime number because it is at equal distance from previous prime (212055209) and next prime (212055241).

It is not a de Polignac number, because 212055225 - 2⁴ = 212055209 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212055195 and 212055204.

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, 1413627 + ... + 1413776.

It is an arithmetic number, because the mean of its divisors is an integer number (29216508).

Almost surely, 2^212055225 is an apocalyptic number.

212055225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212055225 is a deficient number, since it is larger than the sum of its proper divisors (138542871).

212055225 is a wasteful number, since it uses less digits than its factorization.

212055225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827416 (or 2827411 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 212055225 is about 14562.1160893601. The cubic root of 212055225 is about 596.3249667309.

The spelling of 212055225 in words is "two hundred twelve million, fifty-five thousand, two hundred twenty-five".