25728055605779 has 16 divisors (see below), whose sum is σ = 27172183463040. Its totient is φ = 24335087515200.

The previous prime is 25728055605767. The next prime is 25728055605797. The reversal of 25728055605779 is 97750655082752.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25728055605779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25728055605479) 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, 75510122 + ... + 75850079.

It is an arithmetic number, because the mean of its divisors is an integer number (1698261466440).

Almost surely, 2^{25728055605779} is an apocalyptic number.

25728055605779 is a deficient number, since it is larger than the sum of its proper divisors (1444127857261).

25728055605779 is a wasteful number, since it uses less digits than its factorization.

25728055605779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151360370.

The product of its (nonzero) digits is 370440000, while the sum is 68.

The spelling of 25728055605779 in words is "twenty-five trillion, seven hundred twenty-eight billion, fifty-five million, six hundred five thousand, seven hundred seventy-nine".