25928868 has 48 divisors (see below), whose sum is σ = 69995520. Its totient is φ = 7317024.

The previous prime is 25928807. The next prime is 25928869. The reversal of 25928868 is 86882952.

It is a super-2 number, since 2×25928868² = 1344612391522848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25928869) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5113 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (1458240).

Almost surely, 2^25928868 is an apocalyptic number.

25928868 is a gapful number since it is divisible by the number (28) 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 25928868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34997760).

25928868 is an abundant number, since it is smaller than the sum of its proper divisors (44066652).

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

25928868 is a wasteful number, since it uses less digits than its factorization.

25928868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3816 (or 3814 counting only the distinct ones).

The product of its digits is 552960, while the sum is 48.

The square root of 25928868 is about 5092.0396699162. The cubic root of 25928868 is about 295.9791956403.

It can be divided in two parts, 25928 and 868, that added together give a triangular number (26796 = T₂₃₁).

The spelling of 25928868 in words is "twenty-five million, nine hundred twenty-eight thousand, eight hundred sixty-eight".