25448957 has 4 divisors (see below), whose sum is σ = 25929180. Its totient is φ = 24968736.

The previous prime is 25448953. The next prime is 25448989. The reversal of 25448957 is 75984452.

It is a happy number.

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 13205956 + 12243001 = 3634^2 + 3499^2 .

It is a cyclic number.

It is not a de Polignac number, because 25448957 - 2² = 25448953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25448953) 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 in 3 ways as a sum of consecutive naturals, for example, 240032 + ... + 240137.

It is an arithmetic number, because the mean of its divisors is an integer number (6482295).

Almost surely, 2^25448957 is an apocalyptic number.

It is an amenable number.

25448957 is a deficient number, since it is larger than the sum of its proper divisors (480223).

25448957 is an equidigital number, since it uses as much as digits as its factorization.

25448957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480222.

The product of its digits is 403200, while the sum is 44.

The square root of 25448957 is about 5044.6959274073. The cubic root of 25448957 is about 294.1417437050.

The spelling of 25448957 in words is "twenty-five million, four hundred forty-eight thousand, nine hundred fifty-seven".