212008025 has 6 divisors (see below), whose sum is σ = 262889982. Its totient is φ = 169606400.

The previous prime is 212007973. The next prime is 212008073. The reversal of 212008025 is 520800212.

It can be written as a sum of positive squares in 3 ways, for example, as 70778569 + 141229456 = 8413^2 + 11884^2 .

It is not a de Polignac number, because 212008025 - 2²² = 207813721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212007988 and 212008006.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4240136 + ... + 4240185.

It is an arithmetic number, because the mean of its divisors is an integer number (43814997).

Almost surely, 2^212008025 is an apocalyptic number.

212008025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212008025 is a deficient number, since it is larger than the sum of its proper divisors (50881957).

212008025 is an equidigital number, since it uses as much as digits as its factorization.

212008025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8480331 (or 8480326 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 212008025 is about 14560.4953555846. The cubic root of 212008025 is about 596.2807194096.

Adding to 212008025 its reverse (520800212), we get a palindrome (732808237).

The spelling of 212008025 in words is "two hundred twelve million, eight thousand, twenty-five".