25728093 has 12 divisors (see below), whose sum is σ = 37325340. Its totient is φ = 17077056.

The previous prime is 25728077. The next prime is 25728107. The reversal of 25728093 is 39082752.

It is a happy number.

25728093 is a `hidden beast` number, since 2 + 572 + 80 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15824484 + 9903609 = 3978^2 + 3147^2 .

It is not a de Polignac number, because 25728093 - 2⁴ = 25728077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25728023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4038 + ... + 8231.

It is an arithmetic number, because the mean of its divisors is an integer number (3110445).

Almost surely, 2^25728093 is an apocalyptic number.

It is an amenable number.

25728093 is a deficient number, since it is larger than the sum of its proper divisors (11597247).

25728093 is a wasteful number, since it uses less digits than its factorization.

25728093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12508 (or 12505 counting only the distinct ones).

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

The square root of 25728093 is about 5072.2867623982. The cubic root of 25728093 is about 295.2132633893.

The spelling of 25728093 in words is "twenty-five million, seven hundred twenty-eight thousand, ninety-three".