6425818855 has 4 divisors (see below), whose sum is σ = 7710982632. Its totient is φ = 5140655080.

The previous prime is 6425818837. The next prime is 6425818859. The reversal of 6425818855 is 5588185246.

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

It is not a de Polignac number, because 6425818855 - 2⁷ = 6425818727 is a prime.

It is a super-2 number, since 2×6425818855² = 82582295914547022050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6425818859) 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, 642581881 + ... + 642581890.

It is an arithmetic number, because the mean of its divisors is an integer number (1927745658).

Almost surely, 2^6425818855 is an apocalyptic number.

6425818855 is a deficient number, since it is larger than the sum of its proper divisors (1285163777).

6425818855 is a wasteful number, since it uses less digits than its factorization.

6425818855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285163776.

The product of its digits is 3072000, while the sum is 52.

The square root of 6425818855 is about 80161.2054238208. The cubic root of 6425818855 is about 1859.1288608598.

The spelling of 6425818855 in words is "six billion, four hundred twenty-five million, eight hundred eighteen thousand, eight hundred fifty-five".