8252257239 has 20 divisors (see below), whose sum is σ = 12863424816. Its totient is φ = 5262307776.

The previous prime is 8252257231. The next prime is 8252257259. The reversal of 8252257239 is 9327522528.

8252257239 is a `hidden beast` number, since 8 + 25 + 22 + 572 + 39 = 666.

It is not a de Polignac number, because 8252257239 - 2³ = 8252257231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8252257194 and 8252257203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8252257231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2212914 + ... + 2216639.

Almost surely, 2^8252257239 is an apocalyptic number.

8252257239 is a deficient number, since it is larger than the sum of its proper divisors (4611167577).

8252257239 is a wasteful number, since it uses less digits than its factorization.

8252257239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429588 (or 4429579 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 8252257239 is about 90841.9354648502. The cubic root of 8252257239 is about 2020.8042772356.

The spelling of 8252257239 in words is "eight billion, two hundred fifty-two million, two hundred fifty-seven thousand, two hundred thirty-nine".