25093728 has 108 divisors (see below), whose sum is σ = 78732108. Its totient is φ = 7518720.

The previous prime is 25093727. The next prime is 25093769. The reversal of 25093728 is 82739052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 25093692 and 25093701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25093721) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 281908 + ... + 281996.

It is an arithmetic number, because the mean of its divisors is an integer number (729001).

Almost surely, 2^25093728 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 25093728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39366054).

25093728 is an abundant number, since it is smaller than the sum of its proper divisors (53638380).

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

25093728 is a wasteful number, since it uses less digits than its factorization.

25093728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 25093728 is about 5009.3640314914. The cubic root of 25093728 is about 292.7667345528.

The spelling of 25093728 in words is "twenty-five million, ninety-three thousand, seven hundred twenty-eight".