7425857 has 2 divisors, whose sum is σ = 7425858. Its totient is φ = 7425856.

The previous prime is 7425841. The next prime is 7425877. The reversal of 7425857 is 7585247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5340721 + 2085136 = 2311^2 + 1444^2 .

It is a cyclic number.

It is not a de Polignac number, because 7425857 - 2⁴ = 7425841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7425857.

It is not a weakly prime, because it can be changed into another prime (7425877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3712928 + 3712929.

It is an arithmetic number, because the mean of its divisors is an integer number (3712929).

Almost surely, 2^7425857 is an apocalyptic number.

It is an amenable number.

7425857 is a deficient number, since it is larger than the sum of its proper divisors (1).

7425857 is an equidigital number, since it uses as much as digits as its factorization.

7425857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 38.

The square root of 7425857 is about 2725.0425684748. The cubic root of 7425857 is about 195.0962225091.

The spelling of 7425857 in words is "seven million, four hundred twenty-five thousand, eight hundred fifty-seven".