25829928 has 112 divisors (see below), whose sum is σ = 75023520. Its totient is φ = 8328096.

The previous prime is 25829927. The next prime is 25829929. The reversal of 25829928 is 82992852.

It is an interprime number because it is at equal distance from previous prime (25829927) and next prime (25829929).

It is not an unprimeable number, because it can be changed into a prime (25829927) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 250725 + ... + 250827.

Almost surely, 2^25829928 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 25829928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37511760).

25829928 is an abundant number, since it is smaller than the sum of its proper divisors (49193592).

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

25829928 is a wasteful number, since it uses less digits than its factorization.

25829928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 151 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 25829928 is about 5082.3152204483. The cubic root of 25829928 is about 295.6022475923.

The spelling of 25829928 in words is "twenty-five million, eight hundred twenty-nine thousand, nine hundred twenty-eight".