8189513125 has 20 divisors (see below), whose sum is σ = 10277719452. Its totient is φ = 6523376000.

The previous prime is 8189513119. The next prime is 8189513131. The reversal of 8189513125 is 5213159818.

It is an interprime number because it is at equal distance from previous prime (8189513119) and next prime (8189513131).

It can be written as a sum of positive squares in 10 ways, for example, as 7150224481 + 1039288644 = 84559^2 + 32238^2 .

It is not a de Polignac number, because 8189513125 - 2⁷ = 8189512997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117507 + ... + 173743.

Almost surely, 2^8189513125 is an apocalyptic number.

It is an amenable number.

8189513125 is a deficient number, since it is larger than the sum of its proper divisors (2088206327).

8189513125 is an equidigital number, since it uses as much as digits as its factorization.

8189513125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56490 (or 56475 counting only the distinct ones).

The product of its digits is 86400, while the sum is 43.

The square root of 8189513125 is about 90495.9287758295. The cubic root of 8189513125 is about 2015.6696705041.

The spelling of 8189513125 in words is "eight billion, one hundred eighty-nine million, five hundred thirteen thousand, one hundred twenty-five".