8639253425 has 12 divisors (see below), whose sum is σ = 11686554096. Its totient is φ = 6283093200.

The previous prime is 8639253397. The next prime is 8639253433. The reversal of 8639253425 is 5243529368.

It is not a de Polignac number, because 8639253425 - 2⁶ = 8639253361 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8639253425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15707459 + ... + 15708008.

It is an arithmetic number, because the mean of its divisors is an integer number (973879508).

Almost surely, 2^8639253425 is an apocalyptic number.

It is an amenable number.

8639253425 is a deficient number, since it is larger than the sum of its proper divisors (3047300671).

8639253425 is a wasteful number, since it uses less digits than its factorization.

8639253425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31415488 (or 31415483 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 47.

The square root of 8639253425 is about 92947.5842881352. The cubic root of 8639253425 is about 2051.9120312868.

The spelling of 8639253425 in words is "eight billion, six hundred thirty-nine million, two hundred fifty-three thousand, four hundred twenty-five".