28525188501 has 96 divisors (see below), whose sum is σ = 46797004800. Its totient is φ = 17308209600.

The previous prime is 28525188499. The next prime is 28525188533. The reversal of 28525188501 is 10588152582.

28525188501 is a `hidden beast` number, since 2 + 8 + 52 + 518 + 85 + 0 + 1 = 666.

It is not a de Polignac number, because 28525188501 - 2¹ = 28525188499 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28525188581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10567450 + ... + 10570148.

It is an arithmetic number, because the mean of its divisors is an integer number (487468800).

Almost surely, 2^28525188501 is an apocalyptic number.

It is an amenable number.

28525188501 is a deficient number, since it is larger than the sum of its proper divisors (18271816299).

28525188501 is a wasteful number, since it uses less digits than its factorization.

28525188501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 45.

The spelling of 28525188501 in words is "twenty-eight billion, five hundred twenty-five million, one hundred eighty-eight thousand, five hundred one".