25885424 has 40 divisors (see below), whose sum is σ = 54036720. Its totient is φ = 11967488.

The previous prime is 25885417. The next prime is 25885427. The reversal of 25885424 is 42458852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25885427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15242 + ... + 16854.

It is an arithmetic number, because the mean of its divisors is an integer number (1350918).

Almost surely, 2^25885424 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 25885424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27018360).

25885424 is an abundant number, since it is smaller than the sum of its proper divisors (28151296).

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

25885424 is a wasteful number, since it uses less digits than its factorization.

25885424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1691 counting only the distinct ones).

The product of its digits is 102400, while the sum is 38.

The square root of 25885424 is about 5087.7720074705. The cubic root of 25885424 is about 295.8137981590.

The spelling of 25885424 in words is "twenty-five million, eight hundred eighty-five thousand, four hundred twenty-four".