212425305 has 32 divisors (see below), whose sum is σ = 350034048. Its totient is φ = 109939200.

The previous prime is 212425271. The next prime is 212425307. The reversal of 212425305 is 503524212.

212425305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212425305 - 2⁸ = 212425049 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212425307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128947 + ... + 130583.

It is an arithmetic number, because the mean of its divisors is an integer number (10938564).

Almost surely, 2^212425305 is an apocalyptic number.

It is an amenable number.

212425305 is a deficient number, since it is larger than the sum of its proper divisors (137608743).

212425305 is a wasteful number, since it uses less digits than its factorization.

212425305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 212425305 is about 14574.8174945692. The cubic root of 212425305 is about 596.6716683760.

Adding to 212425305 its reverse (503524212), we get a palindrome (715949517).

The spelling of 212425305 in words is "two hundred twelve million, four hundred twenty-five thousand, three hundred five".