212425668 has 144 divisors (see below), whose sum is σ = 672345856. Its totient is φ = 55054080.

The previous prime is 212425657. The next prime is 212425669. The reversal of 212425668 is 866524212.

It is a happy number.

212425668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (212425669) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199305 + ... + 200367.

Almost surely, 2^212425668 is an apocalyptic number.

212425668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212425668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336172928).

212425668 is an abundant number, since it is smaller than the sum of its proper divisors (459920188).

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

212425668 is a wasteful number, since it uses less digits than its factorization.

212425668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1149 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 212425668 is about 14574.8299475500. The cubic root of 212425668 is about 596.6720082471.

The spelling of 212425668 in words is "two hundred twelve million, four hundred twenty-five thousand, six hundred sixty-eight".