7925257 has 2 divisors, whose sum is σ = 7925258. Its totient is φ = 7925256.

The previous prime is 7925237. The next prime is 7925263. The reversal of 7925257 is 7525297.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5271616 + 2653641 = 2296^2 + 1629^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7925257 is a prime.

It is not a weakly prime, because it can be changed into another prime (7925227) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3962628 + 3962629.

It is an arithmetic number, because the mean of its divisors is an integer number (3962629).

Almost surely, 2^7925257 is an apocalyptic number.

It is an amenable number.

7925257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7925257 is an equidigital number, since it uses as much as digits as its factorization.

7925257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44100, while the sum is 37.

The square root of 7925257 is about 2815.1832977623. The cubic root of 7925257 is about 199.3751917727.

The spelling of 7925257 in words is "seven million, nine hundred twenty-five thousand, two hundred fifty-seven".