21034050732825 has 96 divisors (see below), whose sum is σ = 38828338160640. Its totient is φ = 9977421542400.

The previous prime is 21034050732823. The next prime is 21034050732829. The reversal of 21034050732825 is 52823705043012.

It is not a de Polignac number, because 21034050732825 - 2¹ = 21034050732823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21034050732823) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5402059 + ... + 8440991.

It is an arithmetic number, because the mean of its divisors is an integer number (404461855840).

Almost surely, 2^{21034050732825} is an apocalyptic number.

21034050732825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21034050732825 is a deficient number, since it is larger than the sum of its proper divisors (17794287427815).

21034050732825 is a wasteful number, since it uses less digits than its factorization.

21034050732825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039219 (or 3039214 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

Adding to 21034050732825 its reverse (52823705043012), we get a palindrome (73857755775837).

The spelling of 21034050732825 in words is "twenty-one trillion, thirty-four billion, fifty million, seven hundred thirty-two thousand, eight hundred twenty-five".