25287936 has 72 divisors (see below), whose sum is σ = 70885920. Its totient is φ = 7981056.

The previous prime is 25287923. The next prime is 25287953. The reversal of 25287936 is 63978252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13726 + ... + 15458.

Almost surely, 2^25287936 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 25287936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35442960).

25287936 is an abundant number, since it is smaller than the sum of its proper divisors (45597984).

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

25287936 is a wasteful number, since it uses less digits than its factorization.

25287936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1757 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 25287936 is about 5028.7111668896. The cubic root of 25287936 is about 293.5200647592.

It can be divided in two parts, 252 and 87936, that added together give a palindrome (88188).

The spelling of 25287936 in words is "twenty-five million, two hundred eighty-seven thousand, nine hundred thirty-six".