543409405825 has 72 divisors (see below), whose sum is σ = 807241708224. Its totient is φ = 360408892800.

The previous prime is 543409405757. The next prime is 543409405879. The reversal of 543409405825 is 528504904345.

It is not a de Polignac number, because 543409405825 - 2¹⁵ = 543409373057 is a prime.

It is a Duffinian 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 71 ways as a sum of consecutive naturals, for example, 3180732 + ... + 3347218.

It is an arithmetic number, because the mean of its divisors is an integer number (11211690392).

Almost surely, 2^543409405825 is an apocalyptic number.

543409405825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

543409405825 is a deficient number, since it is larger than the sum of its proper divisors (263832302399).

543409405825 is a wasteful number, since it uses less digits than its factorization.

543409405825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166615 (or 166599 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 49.

The spelling of 543409405825 in words is "five hundred forty-three billion, four hundred nine million, four hundred five thousand, eight hundred twenty-five".