212100525 has 120 divisors (see below), whose sum is σ = 483969024. Its totient is φ = 89424000.

The previous prime is 212100437. The next prime is 212100527. The reversal of 212100525 is 525001212.

212100525 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 212100525 - 2¹³ = 212092333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212100498 and 212100507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212100527) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 183700 + ... + 184850.

Almost surely, 2^212100525 is an apocalyptic number.

212100525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212100525 is an abundant number, since it is smaller than the sum of its proper divisors (271868499).

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

212100525 is a wasteful number, since it uses less digits than its factorization.

212100525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193 (or 1179 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 212100525 is about 14563.6714121131. The cubic root of 212100525 is about 596.3674267357.

Adding to 212100525 its reverse (525001212), we get a palindrome (737101737).

The spelling of 212100525 in words is "two hundred twelve million, one hundred thousand, five hundred twenty-five".