8151717625 has 8 divisors (see below), whose sum is σ = 10173343752. Its totient is φ = 6521374000.

The previous prime is 8151717589. The next prime is 8151717659. The reversal of 8151717625 is 5267171518.

It can be written as a sum of positive squares in 4 ways, for example, as 611226729 + 7540490896 = 24723^2 + 86836^2 .

It is not a de Polignac number, because 8151717625 - 2¹⁵ = 8151684857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32606746 + ... + 32606995.

It is an arithmetic number, because the mean of its divisors is an integer number (1271667969).

Almost surely, 2^8151717625 is an apocalyptic number.

It is an amenable number.

8151717625 is a deficient number, since it is larger than the sum of its proper divisors (2021626127).

8151717625 is an equidigital number, since it uses as much as digits as its factorization.

8151717625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65213756 (or 65213746 counting only the distinct ones).

The product of its digits is 117600, while the sum is 43.

The square root of 8151717625 is about 90286.8629702018. The cubic root of 8151717625 is about 2012.5640425590.

The spelling of 8151717625 in words is "eight billion, one hundred fifty-one million, seven hundred seventeen thousand, six hundred twenty-five".