213121025325 has 72 divisors (see below), whose sum is σ = 411212791808. Its totient is φ = 104888960640.

The previous prime is 213121025321. The next prime is 213121025353. The reversal of 213121025325 is 523520121312.

213121025325 is a `hidden beast` number, since 2 + 1 + 3 + 121 + 0 + 2 + 532 + 5 = 666.

It is not a de Polignac number, because 213121025325 - 2² = 213121025321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213121025321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 11594292 + ... + 11612658.

Almost surely, 2^213121025325 is an apocalyptic number.

213121025325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213121025325 is a deficient number, since it is larger than the sum of its proper divisors (198091766483).

213121025325 is a wasteful number, since it uses less digits than its factorization.

213121025325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22363 (or 22355 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 213121025325 its reverse (523520121312), we get a palindrome (736641146637).

The spelling of 213121025325 in words is "two hundred thirteen billion, one hundred twenty-one million, twenty-five thousand, three hundred twenty-five".