25728872 has 16 divisors (see below), whose sum is σ = 51952740. Its totient is φ = 11874816.

The previous prime is 25728863. The next prime is 25728883. The reversal of 25728872 is 27882752.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25664356 + 64516 = 5066^2 + 254^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123593 + ... + 123800.

Almost surely, 2^25728872 is an apocalyptic number.

It is an amenable number.

25728872 is an abundant number, since it is smaller than the sum of its proper divisors (26223868).

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

25728872 is a wasteful number, since it uses less digits than its factorization.

25728872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247412 (or 247408 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 25728872 is about 5072.3635516394. The cubic root of 25728872 is about 295.2162428667.

The spelling of 25728872 in words is "twenty-five million, seven hundred twenty-eight thousand, eight hundred seventy-two".