25289712 has 80 divisors (see below), whose sum is σ = 82970880. Its totient is φ = 7224768.

The previous prime is 25289699. The next prime is 25289731. The reversal of 25289712 is 21798252.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158 + ... + 7205.

It is an arithmetic number, because the mean of its divisors is an integer number (1037136).

Almost surely, 2^25289712 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 25289712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41485440).

25289712 is an abundant number, since it is smaller than the sum of its proper divisors (57681168).

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

25289712 is a wasteful number, since it uses less digits than its factorization.

25289712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8387 (or 8375 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 25289712 is about 5028.8877497912. The cubic root of 25289712 is about 293.5269360124.

The spelling of 25289712 in words is "twenty-five million, two hundred eighty-nine thousand, seven hundred twelve".