25663248 has 60 divisors (see below), whose sum is σ = 77351820. Its totient is φ = 7895808.

The previous prime is 25663247. The next prime is 25663273. The reversal of 25663248 is 84236652.

It can be written as a sum of positive squares in 2 ways, for example, as 13046544 + 12616704 = 3612^2 + 3552^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25663241) 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 11 ways as a sum of consecutive naturals, for example, 4983 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (1289197).

Almost surely, 2^25663248 is an apocalyptic number.

It is an amenable number.

25663248 is an abundant number, since it is smaller than the sum of its proper divisors (51688572).

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

25663248 is a wasteful number, since it uses less digits than its factorization.

25663248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13736 (or 13727 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 25663248 is about 5065.8906423254. The cubic root of 25663248 is about 294.9650365534.

It can be divided in two parts, 256 and 63248, that added together give a square (63504 = 252²).

The spelling of 25663248 in words is "twenty-five million, six hundred sixty-three thousand, two hundred forty-eight".