25878528 has 168 divisors, whose sum is σ = 83487768. Its totient is φ = 7962624.

The previous prime is 25878509. The next prime is 25878553. The reversal of 25878528 is 82587852.

25878528 is a `hidden beast` number, since 2 + 58 + 78 + 528 = 666.

It is a super-2 number, since 2×25878528² = 1339396422893568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1990650 + ... + 1990662.

It is an arithmetic number, because the mean of its divisors is an integer number (496951).

Almost surely, 2^25878528 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 25878528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41743884).

25878528 is an abundant number, since it is smaller than the sum of its proper divisors (57609240).

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

25878528 is an frugal number, since it uses more digits than its factorization.

25878528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54 (or 18 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 25878528 is about 5087.0942590048. The cubic root of 25878528 is about 295.7875270920.

The spelling of 25878528 in words is "twenty-five million, eight hundred seventy-eight thousand, five hundred twenty-eight".