28255750525 has 48 divisors (see below), whose sum is σ = 37203154560. Its totient is φ = 21255494400.

The previous prime is 28255750517. The next prime is 28255750529. The reversal of 28255750525 is 52505755282.

It is not a de Polignac number, because 28255750525 - 2³ = 28255750517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255750529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4552074 + ... + 4558276.

It is an arithmetic number, because the mean of its divisors is an integer number (775065720).

Almost surely, 2^28255750525 is an apocalyptic number.

28255750525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28255750525 is a deficient number, since it is larger than the sum of its proper divisors (8947404035).

28255750525 is a wasteful number, since it uses less digits than its factorization.

28255750525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406 (or 6401 counting only the distinct ones).

The product of its (nonzero) digits is 1400000, while the sum is 46.

The spelling of 28255750525 in words is "twenty-eight billion, two hundred fifty-five million, seven hundred fifty thousand, five hundred twenty-five".