21412220325 has 24 divisors (see below), whose sum is σ = 36622284000. Its totient is φ = 11026061760.

The previous prime is 21412220279. The next prime is 21412220327. The reversal of 21412220325 is 52302221412.

It is not a de Polignac number, because 21412220325 - 2⁶ = 21412220261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21412220295 and 21412220304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21412220327) 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 23 ways as a sum of consecutive naturals, for example, 4920175 + ... + 4924524.

It is an arithmetic number, because the mean of its divisors is an integer number (1525928500).

Almost surely, 2^21412220325 is an apocalyptic number.

21412220325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21412220325 is a deficient number, since it is larger than the sum of its proper divisors (15210063675).

21412220325 is a wasteful number, since it uses less digits than its factorization.

21412220325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9844741 (or 9844736 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21412220325 its reverse (52302221412), we get a palindrome (73714441737).

The spelling of 21412220325 in words is "twenty-one billion, four hundred twelve million, two hundred twenty thousand, three hundred twenty-five".