25331028 has 48 divisors (see below), whose sum is σ = 62610240. Its totient is φ = 7948800.

The previous prime is 25331021. The next prime is 25331029. The reversal of 25331028 is 82013352.

It is a junction number, because it is equal to n+sod(n) for n = 25330989 and 25331007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25331021) 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, 54718 + ... + 55178.

It is an arithmetic number, because the mean of its divisors is an integer number (1304380).

Almost surely, 2^25331028 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 25331028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31305120).

25331028 is an abundant number, since it is smaller than the sum of its proper divisors (37279212).

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

25331028 is a wasteful number, since it uses less digits than its factorization.

25331028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25331028 is about 5032.9939399924. The cubic root of 25331028 is about 293.6866947934.

The spelling of 25331028 in words is "twenty-five million, three hundred thirty-one thousand, twenty-eight".