25881072 has 160 divisors (see below), whose sum is σ = 84851712. Its totient is φ = 6623232.

The previous prime is 25881061. The next prime is 25881077. The reversal of 25881072 is 27018852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25881077) 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 31 ways as a sum of consecutive naturals, for example, 131278 + ... + 131474.

Almost surely, 2^25881072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25881072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42425856).

25881072 is an abundant number, since it is smaller than the sum of its proper divisors (58970640).

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

25881072 is a wasteful number, since it uses less digits than its factorization.

25881072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 25881072 is about 5087.3442973717. The cubic root of 25881072 is about 295.7972192817.

The spelling of 25881072 in words is "twenty-five million, eight hundred eighty-one thousand, seventy-two".