25859904 has 112 divisors (see below), whose sum is σ = 79589376. Its totient is φ = 7257600.

The previous prime is 25859903. The next prime is 25859959. The reversal of 25859904 is 40995852.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25859903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95289 + ... + 95559.

Almost surely, 2^25859904 is an apocalyptic number.

25859904 is a gapful number since it is divisible by the number (24) 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 25859904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39794688).

25859904 is an abundant number, since it is smaller than the sum of its proper divisors (53729472).

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

25859904 is a wasteful number, since it uses less digits than its factorization.

25859904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 25859904 is about 5085.2634150061. The cubic root of 25859904 is about 295.7165535945.

The spelling of 25859904 in words is "twenty-five million, eight hundred fifty-nine thousand, nine hundred four".