8425145839 has 4 divisors (see below), whose sum is σ = 9191068200. Its totient is φ = 7659223480.

The previous prime is 8425145819. The next prime is 8425145857. The reversal of 8425145839 is 9385415248.

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 8425145839 - 2⁷ = 8425145711 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8425145792 and 8425145801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8425145819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382961164 + ... + 382961185.

It is an arithmetic number, because the mean of its divisors is an integer number (2297767050).

Almost surely, 2^8425145839 is an apocalyptic number.

8425145839 is a deficient number, since it is larger than the sum of its proper divisors (765922361).

8425145839 is a wasteful number, since it uses less digits than its factorization.

8425145839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765922360.

The product of its digits is 1382400, while the sum is 49.

The square root of 8425145839 is about 91788.5931856459. The cubic root of 8425145839 is about 2034.8191166670.

The spelling of 8425145839 in words is "eight billion, four hundred twenty-five million, one hundred forty-five thousand, eight hundred thirty-nine".