25396457 has 4 divisors (see below), whose sum is σ = 25439316. Its totient is φ = 25353600.

The previous prime is 25396447. The next prime is 25396463. The reversal of 25396457 is 75469352.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17673616 + 7722841 = 4204^2 + 2779^2 .

It is a cyclic number.

It is not a de Polignac number, because 25396457 - 2⁸ = 25396201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25396447) 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 in 3 ways as a sum of consecutive naturals, for example, 20528 + ... + 21729.

It is an arithmetic number, because the mean of its divisors is an integer number (6359829).

Almost surely, 2^25396457 is an apocalyptic number.

It is an amenable number.

25396457 is a deficient number, since it is larger than the sum of its proper divisors (42859).

25396457 is an equidigital number, since it uses as much as digits as its factorization.

25396457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42858.

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

The square root of 25396457 is about 5039.4897559178. The cubic root of 25396457 is about 293.9393376006.

The spelling of 25396457 in words is "twenty-five million, three hundred ninety-six thousand, four hundred fifty-seven".