8717400125 has 36 divisors (see below), whose sum is σ = 12666147156. Its totient is φ = 5972635200.

The previous prime is 8717400121. The next prime is 8717400143. The reversal of 8717400125 is 5210047178.

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.

8717400125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2713784836 + 6003615289 = 52094^2 + 77483^2 .

It is not a de Polignac number, because 8717400125 - 2² = 8717400121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8717400121) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 7306529 + ... + 7307721.

It is an arithmetic number, because the mean of its divisors is an integer number (351837421).

Almost surely, 2^8717400125 is an apocalyptic number.

It is an amenable number.

8717400125 is a deficient number, since it is larger than the sum of its proper divisors (3948747031).

8717400125 is an frugal number, since it uses more digits than its factorization.

8717400125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2415 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 8717400125 is about 93367.0184005037. The cubic root of 8717400125 is about 2058.0803530414.

Multiplying 8717400125 by its product of nonzero digits (15680), we get a square (136688833960000 = 11691400²).

The spelling of 8717400125 in words is "eight billion, seven hundred seventeen million, four hundred thousand, one hundred twenty-five".