25257797 has 2 divisors, whose sum is σ = 25257798. Its totient is φ = 25257796.

The previous prime is 25257779. The next prime is 25257803. The reversal of 25257797 is 79775252.

Together with previous prime (25257779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23049601 + 2208196 = 4801^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 25257797 - 2⁸ = 25257541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25257737) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12628898 + 12628899.

It is an arithmetic number, because the mean of its divisors is an integer number (12628899).

Almost surely, 2^25257797 is an apocalyptic number.

It is an amenable number.

25257797 is a deficient number, since it is larger than the sum of its proper divisors (1).

25257797 is an equidigital number, since it uses as much as digits as its factorization.

25257797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308700, while the sum is 44.

The square root of 25257797 is about 5025.7135811743. The cubic root of 25257797 is about 293.4034094228.

The spelling of 25257797 in words is "twenty-five million, two hundred fifty-seven thousand, seven hundred ninety-seven".