25428832 has 48 divisors (see below), whose sum is σ = 58825872. Its totient is φ = 10667520.

The previous prime is 25428811. The next prime is 25428857. The reversal of 25428832 is 23882452.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1798 + ... + 7354.

It is an arithmetic number, because the mean of its divisors is an integer number (1225539).

Almost surely, 2^25428832 is an apocalyptic number.

25428832 is a gapful number since it is divisible by the number (22) 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 25428832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29412936).

25428832 is an abundant number, since it is smaller than the sum of its proper divisors (33397040).

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

25428832 is a wasteful number, since it uses less digits than its factorization.

25428832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5591 (or 5583 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 25428832 is about 5042.7008636246. The cubic root of 25428832 is about 294.0641876296.

The spelling of 25428832 in words is "twenty-five million, four hundred twenty-eight thousand, eight hundred thirty-two".