28725649753580 has 96 divisors (see below), whose sum is σ = 68495993180160. Its totient is φ = 10031607648000.

The previous prime is 28725649753571. The next prime is 28725649753597. The reversal of 28725649753580 is 8535794652782.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1791296 + ... + 7788455.

It is an arithmetic number, because the mean of its divisors is an integer number (713499928960).

Almost surely, 2^{28725649753580} is an apocalyptic number.

28725649753580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28725649753580 is an abundant number, since it is smaller than the sum of its proper divisors (39770343426580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28725649753580 is a wasteful number, since it uses less digits than its factorization.

28725649753580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9580399 (or 9580397 counting only the distinct ones).

The product of its (nonzero) digits is 1016064000, while the sum is 71.

The spelling of 28725649753580 in words is "twenty-eight trillion, seven hundred twenty-five billion, six hundred forty-nine million, seven hundred fifty-three thousand, five hundred eighty".