8725657 has 2 divisors, whose sum is σ = 8725658. Its totient is φ = 8725656.

The previous prime is 8725643. The next prime is 8725669. The reversal of 8725657 is 7565278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8649481 + 76176 = 2941^2 + 276^2 .

It is a cyclic number.

It is not a de Polignac number, because 8725657 - 2¹¹ = 8723609 is a prime.

It is a super-2 number, since 2×8725657² = 152274180163298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8725627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4362828 + 4362829.

It is an arithmetic number, because the mean of its divisors is an integer number (4362829).

Almost surely, 2^8725657 is an apocalyptic number.

It is an amenable number.

8725657 is a deficient number, since it is larger than the sum of its proper divisors (1).

8725657 is an equidigital number, since it uses as much as digits as its factorization.

8725657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 40.

The square root of 8725657 is about 2953.9223077122. The cubic root of 8725657 is about 205.8729933176.

The spelling of 8725657 in words is "eight million, seven hundred twenty-five thousand, six hundred fifty-seven".