212134425 has 24 divisors (see below), whose sum is σ = 351715584. Its totient is φ = 112820160.

The previous prime is 212134421. The next prime is 212134427. The reversal of 212134425 is 524431212.

It is not a de Polignac number, because 212134425 - 2² = 212134421 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212134395 and 212134404.

It is not an unprimeable number, because it can be changed into a prime (212134421) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 24184 + ... + 31766.

It is an arithmetic number, because the mean of its divisors is an integer number (14654816).

Almost surely, 2^212134425 is an apocalyptic number.

212134425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212134425 is a deficient number, since it is larger than the sum of its proper divisors (139581159).

212134425 is a wasteful number, since it uses less digits than its factorization.

212134425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969 (or 7964 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 212134425 is about 14564.8352204891. The cubic root of 212134425 is about 596.3991974866.

Adding to 212134425 its reverse (524431212), we get a palindrome (736565637).

The spelling of 212134425 in words is "two hundred twelve million, one hundred thirty-four thousand, four hundred twenty-five".