212425404 has 36 divisors (see below), whose sum is σ = 526539384. Its totient is φ = 66642176.

The previous prime is 212425379. The next prime is 212425417. The reversal of 212425404 is 404524212.

It is a happy number.

It is a congruent 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, 27159 + ... + 34094.

It is an arithmetic number, because the mean of its divisors is an integer number (14626094).

Almost surely, 2^212425404 is an apocalyptic number.

It is an amenable number.

212425404 is an abundant number, since it is smaller than the sum of its proper divisors (314113980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212425404 is a wasteful number, since it uses less digits than its factorization.

212425404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61294 (or 61275 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 212425404 is about 14574.8208908377. The cubic root of 212425404 is about 596.6717610681.

Adding to 212425404 its reverse (404524212), we get a palindrome (616949616).

The spelling of 212425404 in words is "two hundred twelve million, four hundred twenty-five thousand, four hundred four".