6405625043 has 4 divisors (see below), whose sum is σ = 6406520568. Its totient is φ = 6404729520.

The previous prime is 6405625013. The next prime is 6405625063. The reversal of 6405625043 is 3405265046.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6405625043 - 2⁸ = 6405624787 is a prime.

It is a super-3 number, since 3×6405625043³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6405624994 and 6405625012.

It is not an unprimeable number, because it can be changed into a prime (6405625013) 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 3 ways as a sum of consecutive naturals, for example, 436946 + ... + 451367.

It is an arithmetic number, because the mean of its divisors is an integer number (1601630142).

Almost surely, 2^6405625043 is an apocalyptic number.

6405625043 is a deficient number, since it is larger than the sum of its proper divisors (895525).

6405625043 is an equidigital number, since it uses as much as digits as its factorization.

6405625043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895524.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 6405625043 is about 80035.1487972628. The cubic root of 6405625043 is about 1857.1793145137.

The spelling of 6405625043 in words is "six billion, four hundred five million, six hundred twenty-five thousand, forty-three".