25728801 has 16 divisors (see below), whose sum is σ = 40266624. Its totient is φ = 14304384.

The previous prime is 25728721. The next prime is 25728809. The reversal of 25728801 is 10882752.

It is not a de Polignac number, because 25728801 - 2⁷ = 25728673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25728809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15780 + ... + 17333.

It is an arithmetic number, because the mean of its divisors is an integer number (2516664).

Almost surely, 2^25728801 is an apocalyptic number.

25728801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25728801 is a deficient number, since it is larger than the sum of its proper divisors (14537823).

25728801 is a wasteful number, since it uses less digits than its factorization.

25728801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33160.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 25728801 is about 5072.3565529249. The cubic root of 25728801 is about 295.2159713122.

The spelling of 25728801 in words is "twenty-five million, seven hundred twenty-eight thousand, eight hundred one".