21304426472025 has 12 divisors (see below), whose sum is σ = 35223318433872. Its totient is φ = 11362360785040.

The previous prime is 21304426471957. The next prime is 21304426472027. The reversal of 21304426472025 is 52027462440312.

It is not a de Polignac number, because 21304426472025 - 2⁹ = 21304426471513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21304426472027) by changing a digit.

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, 142029509739 + ... + 142029509888.

It is an arithmetic number, because the mean of its divisors is an integer number (2935276536156).

Almost surely, 2^{21304426472025} is an apocalyptic number.

21304426472025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21304426472025 is a deficient number, since it is larger than the sum of its proper divisors (13918891961847).

21304426472025 is a wasteful number, since it uses less digits than its factorization.

21304426472025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284059019640 (or 284059019635 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The spelling of 21304426472025 in words is "twenty-one trillion, three hundred four billion, four hundred twenty-six million, four hundred seventy-two thousand, twenty-five".