25448513 has 2 divisors, whose sum is σ = 25448514. Its totient is φ = 25448512.

The previous prime is 25448509. The next prime is 25448531. The reversal of 25448513 is 31584452.

Together with next prime (25448531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25080064 + 368449 = 5008^2 + 607^2 .

It is a cyclic number.

It is not a de Polignac number, because 25448513 - 2² = 25448509 is a prime.

It is a super-2 number, since 2×25448513² = 1295253627822338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25448513.

It is not a weakly prime, because it can be changed into another prime (25448503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12724256 + 12724257.

It is an arithmetic number, because the mean of its divisors is an integer number (12724257).

Almost surely, 2^25448513 is an apocalyptic number.

It is an amenable number.

25448513 is a deficient number, since it is larger than the sum of its proper divisors (1).

25448513 is an equidigital number, since it uses as much as digits as its factorization.

25448513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 32.

The square root of 25448513 is about 5044.6519205987. The cubic root of 25448513 is about 294.1400330953.

The spelling of 25448513 in words is "twenty-five million, four hundred forty-eight thousand, five hundred thirteen".