212134025 has 12 divisors (see below), whose sum is σ = 263329500. Its totient is φ = 169524480.

The previous prime is 212134009. The next prime is 212134049. The reversal of 212134025 is 520431212.

It can be written as a sum of positive squares in 6 ways, for example, as 12166144 + 199967881 = 3488^2 + 14141^2 .

It is not a de Polignac number, because 212134025 - 2⁴ = 212134009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212133988 and 212134006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22181 + ... + 30269.

It is an arithmetic number, because the mean of its divisors is an integer number (21944125).

Almost surely, 2^212134025 is an apocalyptic number.

212134025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212134025 is a deficient number, since it is larger than the sum of its proper divisors (51195475).

212134025 is a wasteful number, since it uses less digits than its factorization.

212134025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148 (or 9143 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 212134025 is about 14564.8214887791. The cubic root of 212134025 is about 596.3988226302.

Adding to 212134025 its reverse (520431212), we get a palindrome (732565237).

The spelling of 212134025 in words is "two hundred twelve million, one hundred thirty-four thousand, twenty-five".