212305125 has 32 divisors (see below), whose sum is σ = 355904640. Its totient is φ = 112387200.

The previous prime is 212305117. The next prime is 212305151. The reversal of 212305125 is 521503212.

212305125 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 212305125 - 2³ = 212305117 is a prime.

It is a super-2 number, since 2×212305125² = 90146932202531250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50089 + ... + 54161.

It is an arithmetic number, because the mean of its divisors is an integer number (11122020).

Almost surely, 2^212305125 is an apocalyptic number.

212305125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212305125 is a deficient number, since it is larger than the sum of its proper divisors (143599515).

212305125 is a wasteful number, since it uses less digits than its factorization.

212305125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4230 (or 4220 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 212305125 is about 14570.6940466129. The cubic root of 212305125 is about 596.5591244579.

Adding to 212305125 its reverse (521503212), we get a palindrome (733808337).

The spelling of 212305125 in words is "two hundred twelve million, three hundred five thousand, one hundred twenty-five".