25845568 has 56 divisors (see below), whose sum is σ = 60537344. Its totient is φ = 10713600.

The previous prime is 25845551. The next prime is 25845569. The reversal of 25845568 is 86554852.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25845569) 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 7 ways as a sum of consecutive naturals, for example, 12958 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (1081024).

Almost surely, 2^25845568 is an apocalyptic number.

25845568 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 25845568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30268672).

25845568 is an abundant number, since it is smaller than the sum of its proper divisors (34691776).

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

25845568 is a wasteful number, since it uses less digits than its factorization.

25845568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911 (or 1901 counting only the distinct ones).

The product of its digits is 384000, while the sum is 43.

The square root of 25845568 is about 5083.8536564303. The cubic root of 25845568 is about 295.6618978598.

The spelling of 25845568 in words is "twenty-five million, eight hundred forty-five thousand, five hundred sixty-eight".