25635479 has 2 divisors, whose sum is σ = 25635480. Its totient is φ = 25635478.

The previous prime is 25635461. The next prime is 25635497. The reversal of 25635479 is 97453652.

Together with next prime (25635497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (25635461) and next prime (25635497).

It is a cyclic number.

It is not a de Polignac number, because 25635479 - 2⁸ = 25635223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25632479) 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, 12817739 + 12817740.

It is an arithmetic number, because the mean of its divisors is an integer number (12817740).

Almost surely, 2^25635479 is an apocalyptic number.

25635479 is a deficient number, since it is larger than the sum of its proper divisors (1).

25635479 is an equidigital number, since it uses as much as digits as its factorization.

25635479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 41.

The square root of 25635479 is about 5063.1491188785. The cubic root of 25635479 is about 294.8586088687.

The spelling of 25635479 in words is "twenty-five million, six hundred thirty-five thousand, four hundred seventy-nine".