25728489545548 has 12 divisors (see below), whose sum is σ = 45024939693720. Its totient is φ = 12864221061632.

The previous prime is 25728489545501. The next prime is 25728489545567. The reversal of 25728489545548 is 84554598482752.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3363061 + ... + 7922572.

It is an arithmetic number, because the mean of its divisors is an integer number (3752078307810).

Almost surely, 2^{25728489545548} is an apocalyptic number.

It is an amenable number.

25728489545548 is a deficient number, since it is larger than the sum of its proper divisors (19296450148172).

25728489545548 is a wasteful number, since it uses less digits than its factorization.

25728489545548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11855576 (or 11855574 counting only the distinct ones).

The product of its digits is 5160960000, while the sum is 76.

The spelling of 25728489545548 in words is "twenty-five trillion, seven hundred twenty-eight billion, four hundred eighty-nine million, five hundred forty-five thousand, five hundred forty-eight".