8425512500 has 54 divisors (see below), whose sum is σ = 18452104146. Its totient is φ = 3366100000.

The previous prime is 8425512497. The next prime is 8425512527. The reversal of 8425512500 is 52155248.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 8100720016 + 324792484 = 90004^2 + 18022^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10262090 + ... + 10262910.

Almost surely, 2^8425512500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8425512500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9226052073).

8425512500 is an abundant number, since it is smaller than the sum of its proper divisors (10026591646).

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

8425512500 is an frugal number, since it uses more digits than its factorization.

8425512500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 8425512500 is about 91790.5904763664. The cubic root of 8425512500 is about 2034.8486345730.

Adding to 8425512500 its reverse (52155248), we get a palindrome (8477667748).

The spelling of 8425512500 in words is "eight billion, four hundred twenty-five million, five hundred twelve thousand, five hundred".