212412225 has 12 divisors (see below), whose sum is σ = 351188336. Its totient is φ = 113286480.

The previous prime is 212412203. The next prime is 212412241. The reversal of 212412225 is 522214212.

It is not a de Polignac number, because 212412225 - 2⁷ = 212412097 is a prime.

It is a Duffinian number.

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, 1416007 + ... + 1416156.

Almost surely, 2^212412225 is an apocalyptic number.

212412225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212412225 is a deficient number, since it is larger than the sum of its proper divisors (138776111).

212412225 is a wasteful number, since it uses less digits than its factorization.

212412225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832176 (or 2832171 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 212412225 is about 14574.3687684922. The cubic root of 212412225 is about 596.6594215211.

Adding to 212412225 its reverse (522214212), we get a palindrome (734626437).

The spelling of 212412225 in words is "two hundred twelve million, four hundred twelve thousand, two hundred twenty-five".