8725817 has 2 divisors, whose sum is σ = 8725818. Its totient is φ = 8725816.

The previous prime is 8725813. The next prime is 8725823. The reversal of 8725817 is 7185278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7295401 + 1430416 = 2701^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 8725817 - 2² = 8725813 is a prime.

It is a super-2 number, since 2×8725817² = 152279764634978, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8725813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4362908 + 4362909.

It is an arithmetic number, because the mean of its divisors is an integer number (4362909).

Almost surely, 2^8725817 is an apocalyptic number.

It is an amenable number.

8725817 is a deficient number, since it is larger than the sum of its proper divisors (1).

8725817 is an equidigital number, since it uses as much as digits as its factorization.

8725817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 38.

The square root of 8725817 is about 2953.9493902232. The cubic root of 8725817 is about 205.8742516556.

The spelling of 8725817 in words is "eight million, seven hundred twenty-five thousand, eight hundred seventeen".