21314435223425 has 12 divisors (see below), whose sum is σ = 26992237969536. Its totient is φ = 16688749280400.

The previous prime is 21314435223359. The next prime is 21314435223443. The reversal of 21314435223425 is 52432253441312.

It is not a de Polignac number, because 21314435223425 - 2²⁰ = 21314434174849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9069971261 + ... + 9069973610.

It is an arithmetic number, because the mean of its divisors is an integer number (2249353164128).

Almost surely, 2^{21314435223425} is an apocalyptic number.

21314435223425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21314435223425 is a deficient number, since it is larger than the sum of its proper divisors (5677802746111).

21314435223425 is a wasteful number, since it uses less digits than its factorization.

21314435223425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18139944928 (or 18139944923 counting only the distinct ones).

The product of its digits is 691200, while the sum is 41.

Adding to 21314435223425 its reverse (52432253441312), we get a palindrome (73746688664737).

The spelling of 21314435223425 in words is "twenty-one trillion, three hundred fourteen billion, four hundred thirty-five million, two hundred twenty-three thousand, four hundred twenty-five".