212205325 has 18 divisors (see below), whose sum is σ = 272548094. Its totient is φ = 163894080.

The previous prime is 212205317. The next prime is 212205341. The reversal of 212205325 is 523502212.

It can be written as a sum of positive squares in 9 ways, for example, as 49744809 + 162460516 = 7053^2 + 12746^2 .

It is not a de Polignac number, because 212205325 - 2³ = 212205317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212205296 and 212205305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15979 + ... + 26071.

Almost surely, 2^212205325 is an apocalyptic number.

212205325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212205325 is a deficient number, since it is larger than the sum of its proper divisors (60342769).

212205325 is a wasteful number, since it uses less digits than its factorization.

212205325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10161 (or 10127 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 212205325 is about 14567.2689616139. The cubic root of 212205325 is about 596.4656333375.

Adding to 212205325 its reverse (523502212), we get a palindrome (735707537).

The spelling of 212205325 in words is "two hundred twelve million, two hundred five thousand, three hundred twenty-five".