25728385000 has 40 divisors (see below), whose sum is σ = 60281617770. Its totient is φ = 10291352000.

The previous prime is 25728384973. The next prime is 25728385019. The reversal of 25728385000 is 58382752.

It can be written as a sum of positive squares in 5 ways, for example, as 534441924 + 25193943076 = 23118^2 + 158726^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2567839 + ... + 2577838.

Almost surely, 2^25728385000 is an apocalyptic number.

25728385000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25728385000 is an abundant number, since it is smaller than the sum of its proper divisors (34553232770).

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

25728385000 is an equidigital number, since it uses as much as digits as its factorization.

25728385000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145703 (or 5145684 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 25728385000 in words is "twenty-five billion, seven hundred twenty-eight million, three hundred eighty-five thousand".