25287568 has 40 divisors (see below), whose sum is σ = 53568000. Its totient is φ = 11512320.

The previous prime is 25287553. The next prime is 25287571. The reversal of 25287568 is 86578252.

It is a super-2 number, since 2×25287568² = 1278922190709248, which contains 22 as substring.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6933 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (1339200).

Almost surely, 2^25287568 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 25287568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26784000).

25287568 is an abundant number, since it is smaller than the sum of its proper divisors (28280432).

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

25287568 is a wasteful number, since it uses less digits than its factorization.

25287568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055 (or 3049 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 25287568 is about 5028.6745768642. The cubic root of 25287568 is about 293.5186409458.

The spelling of 25287568 in words is "twenty-five million, two hundred eighty-seven thousand, five hundred sixty-eight".