212425520 has 40 divisors (see below), whose sum is σ = 494526384. Its totient is φ = 84860672.

The previous prime is 212425517. The next prime is 212425531. The reversal of 212425520 is 25524212.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93842 + ... + 96078.

Almost surely, 2^212425520 is an apocalyptic number.

212425520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212425520 is an abundant number, since it is smaller than the sum of its proper divisors (282100864).

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

212425520 is a wasteful number, since it uses less digits than its factorization.

212425520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437 (or 3431 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 212425520 is about 14574.8248703029. The cubic root of 212425520 is about 596.6718696771.

Adding to 212425520 its reverse (25524212), we get a palindrome (237949732).

It can be divided in two parts, 21242 and 5520, that added together give a palindrome (26762).

The spelling of 212425520 in words is "two hundred twelve million, four hundred twenty-five thousand, five hundred twenty".