8525390538 has 64 divisors (see below), whose sum is σ = 20525875200. Its totient is φ = 2357233200.

The previous prime is 8525390521. The next prime is 8525390543. The reversal of 8525390538 is 8350935258.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3018 + ... + 130613.

It is an arithmetic number, because the mean of its divisors is an integer number (320716800).

Almost surely, 2^8525390538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8525390538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10262937600).

8525390538 is an abundant number, since it is smaller than the sum of its proper divisors (12000484662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8525390538 is a wasteful number, since it uses less digits than its factorization.

8525390538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133688 (or 133674 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 8525390538 is about 92333.0414207179. The cubic root of 8525390538 is about 2042.8575980042.

The spelling of 8525390538 in words is "eight billion, five hundred twenty-five million, three hundred ninety thousand, five hundred thirty-eight".