25840248 has 128 divisors (see below), whose sum is σ = 78144000. Its totient is φ = 7112448.

The previous prime is 25840231. The next prime is 25840249. The reversal of 25840248 is 84204852.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25840249) 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 31 ways as a sum of consecutive naturals, for example, 353940 + ... + 354012.

It is an arithmetic number, because the mean of its divisors is an integer number (610500).

Almost surely, 2^25840248 is an apocalyptic number.

25840248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25840248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39072000).

25840248 is an abundant number, since it is smaller than the sum of its proper divisors (52303752).

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

25840248 is a wasteful number, since it uses less digits than its factorization.

25840248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 25840248 is about 5083.3304043707. The cubic root of 25840248 is about 295.6416103166.

The spelling of 25840248 in words is "twenty-five million, eight hundred forty thousand, two hundred forty-eight".