8251726573 has 4 divisors (see below), whose sum is σ = 8264363868. Its totient is φ = 8239089280.

The previous prime is 8251726559. The next prime is 8251726591. The reversal of 8251726573 is 3756271528.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1107758089 + 7143968484 = 33283^2 + 84522^2 .

It is a cyclic number.

It is not a de Polignac number, because 8251726573 - 2¹³ = 8251718381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8251726523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6317668 + ... + 6318973.

It is an arithmetic number, because the mean of its divisors is an integer number (2066090967).

Almost surely, 2^8251726573 is an apocalyptic number.

It is an amenable number.

8251726573 is a deficient number, since it is larger than the sum of its proper divisors (12637295).

8251726573 is a wasteful number, since it uses less digits than its factorization.

8251726573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12637294.

The product of its digits is 705600, while the sum is 46.

The square root of 8251726573 is about 90839.0145972533. The cubic root of 8251726573 is about 2020.7609599921.

The spelling of 8251726573 in words is "eight billion, two hundred fifty-one million, seven hundred twenty-six thousand, five hundred seventy-three".