21471350475325 has 24 divisors (see below), whose sum is σ = 26669610713000. Its totient is φ = 17147975823360.

The previous prime is 21471350475277. The next prime is 21471350475361. The reversal of 21471350475325 is 52357405317412.

It can be written as a sum of positive squares in 12 ways, for example, as 451491268761 + 21019859206564 = 671931^2 + 4584742^2 .

It is not a de Polignac number, because 21471350475325 - 2²⁷ = 21471216257597 is a prime.

It is a super-2 number, since 2×21471350475325² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55680781 + ... + 56065069.

Almost surely, 2^{21471350475325} is an apocalyptic number.

21471350475325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21471350475325 is a deficient number, since it is larger than the sum of its proper divisors (5198260237675).

21471350475325 is a wasteful number, since it uses less digits than its factorization.

21471350475325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388081 (or 388076 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 49.

The spelling of 21471350475325 in words is "twenty-one trillion, four hundred seventy-one billion, three hundred fifty million, four hundred seventy-five thousand, three hundred twenty-five".