25728912 has 120 divisors (see below), whose sum is σ = 80857920. Its totient is φ = 7568640.

The previous prime is 25728889. The next prime is 25728917. The reversal of 25728912 is 21982752.

25728912 is a `hidden beast` number, since 2 + 572 + 89 + 1 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (25728917) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58389 + ... + 58827.

It is an arithmetic number, because the mean of its divisors is an integer number (673816).

Almost surely, 2^25728912 is an apocalyptic number.

25728912 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 25728912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40428960).

25728912 is an abundant number, since it is smaller than the sum of its proper divisors (55129008).

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

25728912 is a wasteful number, since it uses less digits than its factorization.

25728912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 492 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 25728912 is about 5072.3674945729. The cubic root of 25728912 is about 295.2163958549.

The spelling of 25728912 in words is "twenty-five million, seven hundred twenty-eight thousand, nine hundred twelve".