25728134 has 16 divisors (see below), whose sum is σ = 39576816. Its totient is φ = 12540000.

The previous prime is 25728119. The next prime is 25728137. The reversal of 25728134 is 43182752.

It is a self number, because there is not a number n which added to its sum of digits gives 25728134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25728137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12584 + ... + 14484.

It is an arithmetic number, because the mean of its divisors is an integer number (2473551).

Almost surely, 2^25728134 is an apocalyptic number.

25728134 is a deficient number, since it is larger than the sum of its proper divisors (13848682).

25728134 is a wasteful number, since it uses less digits than its factorization.

25728134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071.

The product of its digits is 13440, while the sum is 32.

The square root of 25728134 is about 5072.2908039662. The cubic root of 25728134 is about 295.2134202054.

The spelling of 25728134 in words is "twenty-five million, seven hundred twenty-eight thousand, one hundred thirty-four".