25891712 has 128 divisors (see below), whose sum is σ = 66977280. Its totient is φ = 9676800.

The previous prime is 25891711. The next prime is 25891717. The reversal of 25891712 is 21719852.

It is a tau number, because it is divible by the number of its divisors (128).

Its product of digits (10080) is a multiple of the sum of its prime factors (140).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25891711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364637 + ... + 364707.

It is an arithmetic number, because the mean of its divisors is an integer number (523260).

Almost surely, 2^25891712 is an apocalyptic number.

25891712 is a gapful number since it is divisible by the number (22) 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 25891712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33488640).

25891712 is an abundant number, since it is smaller than the sum of its proper divisors (41085568).

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

25891712 is a wasteful number, since it uses less digits than its factorization.

25891712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 128 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 25891712 is about 5088.3899221659. The cubic root of 25891712 is about 295.8377489169.

The spelling of 25891712 in words is "twenty-five million, eight hundred ninety-one thousand, seven hundred twelve".