16725857 has 2 divisors, whose sum is σ = 16725858. Its totient is φ = 16725856.

The previous prime is 16725847. The next prime is 16725869. The reversal of 16725857 is 75852761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16638241 + 87616 = 4079^2 + 296^2 .

It is an emirp because it is prime and its reverse (75852761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16725857 - 2⁸ = 16725601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16725847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8362928 + 8362929.

It is an arithmetic number, because the mean of its divisors is an integer number (8362929).

Almost surely, 2^16725857 is an apocalyptic number.

It is an amenable number.

16725857 is a deficient number, since it is larger than the sum of its proper divisors (1).

16725857 is an equidigital number, since it uses as much as digits as its factorization.

16725857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 41.

The square root of 16725857 is about 4089.7257854287. The cubic root of 16725857 is about 255.7385076058.

The spelling of 16725857 in words is "sixteen million, seven hundred twenty-five thousand, eight hundred fifty-seven".