25987872 has 48 divisors (see below), whose sum is σ = 68668992. Its totient is φ = 8605440.

The previous prime is 25987859. The next prime is 25987873. The reversal of 25987872 is 27878952.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (25987873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15222 + ... + 16842.

It is an arithmetic number, because the mean of its divisors is an integer number (1430604).

Almost surely, 2^25987872 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 25987872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34334496).

25987872 is an abundant number, since it is smaller than the sum of its proper divisors (42681120).

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

25987872 is a wasteful number, since it uses less digits than its factorization.

25987872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801 (or 1793 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 25987872 is about 5097.8301266323. The cubic root of 25987872 is about 296.2035366609.

The spelling of 25987872 in words is "twenty-five million, nine hundred eighty-seven thousand, eight hundred seventy-two".