25897433 has 2 divisors, whose sum is σ = 25897434. Its totient is φ = 25897432.

The previous prime is 25897429. The next prime is 25897441. The reversal of 25897433 is 33479852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22686169 + 3211264 = 4763^2 + 1792^2 .

It is a cyclic number.

It is not a de Polignac number, because 25897433 - 2² = 25897429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (25897483) 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, 12948716 + 12948717.

It is an arithmetic number, because the mean of its divisors is an integer number (12948717).

Almost surely, 2^25897433 is an apocalyptic number.

It is an amenable number.

25897433 is a deficient number, since it is larger than the sum of its proper divisors (1).

25897433 is an equidigital number, since it uses as much as digits as its factorization.

25897433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 25897433 is about 5088.9520532227. The cubic root of 25897433 is about 295.8595366241.

The spelling of 25897433 in words is "twenty-five million, eight hundred ninety-seven thousand, four hundred thirty-three".