13925257 has 2 divisors, whose sum is σ = 13925258. Its totient is φ = 13925256.

The previous prime is 13925243. The next prime is 13925267. The reversal of 13925257 is 75252931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9511056 + 4414201 = 3084^2 + 2101^2 .

It is a cyclic number.

It is not a de Polignac number, because 13925257 - 2⁷ = 13925129 is a prime.

It is not a weakly prime, because it can be changed into another prime (13925267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6962628 + 6962629.

It is an arithmetic number, because the mean of its divisors is an integer number (6962629).

Almost surely, 2^13925257 is an apocalyptic number.

It is an amenable number.

13925257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13925257 is an equidigital number, since it uses as much as digits as its factorization.

13925257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 13925257 is about 3731.6560666814. The cubic root of 13925257 is about 240.5845530937.

The spelling of 13925257 in words is "thirteen million, nine hundred twenty-five thousand, two hundred fifty-seven".