21334004025 has 12 divisors (see below), whose sum is σ = 35272220112. Its totient is φ = 11378135440.

The previous prime is 21334003997. The next prime is 21334004071. The reversal of 21334004025 is 52040043312.

It is not a de Polignac number, because 21334004025 - 2¹¹ = 21334001977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21334003986 and 21334004004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142226619 + ... + 142226768.

It is an arithmetic number, because the mean of its divisors is an integer number (2939351676).

Almost surely, 2^21334004025 is an apocalyptic number.

21334004025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21334004025 is a deficient number, since it is larger than the sum of its proper divisors (13938216087).

21334004025 is a wasteful number, since it uses less digits than its factorization.

21334004025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284453400 (or 284453395 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 21334004025 its reverse (52040043312), we get a palindrome (73374047337).

The spelling of 21334004025 in words is "twenty-one billion, three hundred thirty-four million, four thousand, twenty-five".