25898880 has 256 divisors, whose sum is σ = 98703360. Its totient is φ = 5652480.

The previous prime is 25898879. The next prime is 25898909. The reversal of 25898880 is 8889852.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 551017 + ... + 551063.

It is an arithmetic number, because the mean of its divisors is an integer number (385560).

Almost surely, 2^25898880 is an apocalyptic number.

25898880 is a gapful number since it is divisible by the number (20) 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 25898880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49351680).

25898880 is an abundant number, since it is smaller than the sum of its proper divisors (72804480).

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

25898880 is a wasteful number, since it uses less digits than its factorization.

25898880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The square root of 25898880 is about 5089.0942219613. The cubic root of 25898880 is about 295.8650468327.

Subtracting from 25898880 its reverse (8889852), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 25898880 in words is "twenty-five million, eight hundred ninety-eight thousand, eight hundred eighty".