212518425 has 48 divisors (see below), whose sum is σ = 402831360. Its totient is φ = 96843840.

The previous prime is 212518391. The next prime is 212518433. The reversal of 212518425 is 524815212.

It is not a de Polignac number, because 212518425 - 2⁷ = 212518297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212518392 and 212518401.

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 47 ways as a sum of consecutive naturals, for example, 295216 + ... + 295934.

It is an arithmetic number, because the mean of its divisors is an integer number (8392320).

Almost surely, 2^212518425 is an apocalyptic number.

212518425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212518425 is a deficient number, since it is larger than the sum of its proper divisors (190312935).

212518425 is a wasteful number, since it uses less digits than its factorization.

212518425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1297 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 212518425 is about 14578.0116957012. The cubic root of 212518425 is about 596.7588424674.

The spelling of 212518425 in words is "two hundred twelve million, five hundred eighteen thousand, four hundred twenty-five".