21302300453225 has 48 divisors (see below), whose sum is σ = 29471307929856. Its totient is φ = 15141315840000.

The previous prime is 21302300453167. The next prime is 21302300453251. The reversal of 21302300453225 is 52235400320312.

It is not a de Polignac number, because 21302300453225 - 2¹⁰ = 21302300452201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302300453191 and 21302300453200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7884857 + ... + 10235993.

It is an arithmetic number, because the mean of its divisors is an integer number (613985581872).

Almost surely, 2^{21302300453225} is an apocalyptic number.

21302300453225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21302300453225 is a deficient number, since it is larger than the sum of its proper divisors (8169007476631).

21302300453225 is a wasteful number, since it uses less digits than its factorization.

21302300453225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351906 (or 2351901 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 21302300453225 its reverse (52235400320312), we get a palindrome (73537700773537).

The spelling of 21302300453225 in words is "twenty-one trillion, three hundred two billion, three hundred million, four hundred fifty-three thousand, two hundred twenty-five".