212241025 has 6 divisors (see below), whose sum is σ = 263178902. Its totient is φ = 169792800.

The previous prime is 212241019. The next prime is 212241031. The reversal of 212241025 is 520142212.

It is an interprime number because it is at equal distance from previous prime (212241019) and next prime (212241031).

It can be written as a sum of positive squares in 3 ways, for example, as 1149184 + 211091841 = 1072^2 + 14529^2 .

It is not a de Polignac number, because 212241025 - 2⁵ = 212240993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212240993 and 212241011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4244796 + ... + 4244845.

Almost surely, 2^212241025 is an apocalyptic number.

212241025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212241025 is a deficient number, since it is larger than the sum of its proper divisors (50937877).

212241025 is an equidigital number, since it uses as much as digits as its factorization.

212241025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489651 (or 8489646 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 212241025 is about 14568.4942598746. The cubic root of 212241025 is about 596.4990799206.

Adding to 212241025 its reverse (520142212), we get a palindrome (732383237).

The spelling of 212241025 in words is "two hundred twelve million, two hundred forty-one thousand, twenty-five".