25508648 has 16 divisors (see below), whose sum is σ = 52176960. Its totient is φ = 11594800.

The previous prime is 25508647. The next prime is 25508663. The reversal of 25508648 is 84680552.

It is a super-2 number, since 2×25508648² = 1301382245575808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25508641) 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, 144848 + ... + 145023.

It is an arithmetic number, because the mean of its divisors is an integer number (3261060).

Almost surely, 2^25508648 is an apocalyptic number.

It is an amenable number.

25508648 is an abundant number, since it is smaller than the sum of its proper divisors (26668312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25508648 is a wasteful number, since it uses less digits than its factorization.

25508648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289888 (or 289884 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 25508648 is about 5050.6086761894. The cubic root of 25508648 is about 294.3715357739.

The spelling of 25508648 in words is "twenty-five million, five hundred eight thousand, six hundred forty-eight".