28725357955 has 24 divisors (see below), whose sum is σ = 42208696080. Its totient is φ = 18660680640.

The previous prime is 28725357943. The next prime is 28725357971. The reversal of 28725357955 is 55975352782.

It is not a de Polignac number, because 28725357955 - 2¹¹ = 28725355907 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28725357955.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3080776 + ... + 3090085.

It is an arithmetic number, because the mean of its divisors is an integer number (1758695670).

Almost surely, 2^28725357955 is an apocalyptic number.

28725357955 is a deficient number, since it is larger than the sum of its proper divisors (13483338125).

28725357955 is a wasteful number, since it uses less digits than its factorization.

28725357955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6170899 (or 6170892 counting only the distinct ones).

The product of its digits is 26460000, while the sum is 58.

The spelling of 28725357955 in words is "twenty-eight billion, seven hundred twenty-five million, three hundred fifty-seven thousand, nine hundred fifty-five".