210421404325 has 24 divisors (see below), whose sum is σ = 288891197280. Its totient is φ = 150749649600.

The previous prime is 210421404311. The next prime is 210421404329. The reversal of 210421404325 is 523404124012.

It is not a de Polignac number, because 210421404325 - 2¹¹ = 210421402277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210421404293 and 210421404302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210421404329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5691790 + ... + 5728639.

It is an arithmetic number, because the mean of its divisors is an integer number (12037133220).

Almost surely, 2^210421404325 is an apocalyptic number.

210421404325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210421404325 is a deficient number, since it is larger than the sum of its proper divisors (78469792955).

210421404325 is a wasteful number, since it uses less digits than its factorization.

210421404325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11420517 (or 11420512 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 210421404325 its reverse (523404124012), we get a palindrome (733825528337).

The spelling of 210421404325 in words is "two hundred ten billion, four hundred twenty-one million, four hundred four thousand, three hundred twenty-five".