21011024325 has 24 divisors (see below), whose sum is σ = 35128555200. Its totient is φ = 11079967360.

The previous prime is 21011024311. The next prime is 21011024357. The reversal of 21011024325 is 52342011012.

It is not a de Polignac number, because 21011024325 - 2⁷ = 21011024197 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1567185 + ... + 1580534.

It is an arithmetic number, because the mean of its divisors is an integer number (1463689800).

Almost surely, 2^21011024325 is an apocalyptic number.

21011024325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21011024325 is a deficient number, since it is larger than the sum of its proper divisors (14117530875).

21011024325 is a wasteful number, since it uses less digits than its factorization.

21011024325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3147821 (or 3147816 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 21011024325 its reverse (52342011012), we get a palindrome (73353035337).

The spelling of 21011024325 in words is "twenty-one billion, eleven million, twenty-four thousand, three hundred twenty-five".