25323728 has 20 divisors (see below), whose sum is σ = 50757540. Its totient is φ = 12225024.

The previous prime is 25323721. The next prime is 25323731. The reversal of 25323728 is 82732352.

It can be written as a sum of positive squares in 2 ways, for example, as 13017664 + 12306064 = 3608^2 + 3508^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25323694 and 25323703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25323721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26825 + ... + 27752.

It is an arithmetic number, because the mean of its divisors is an integer number (2537877).

Almost surely, 2^25323728 is an apocalyptic number.

It is an amenable number.

25323728 is an abundant number, since it is smaller than the sum of its proper divisors (25433812).

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

25323728 is a wasteful number, since it uses less digits than its factorization.

25323728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54614 (or 54608 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 25323728 is about 5032.2686732725. The cubic root of 25323728 is about 293.6584801358.

The spelling of 25323728 in words is "twenty-five million, three hundred twenty-three thousand, seven hundred twenty-eight".