28752643425 has 24 divisors (see below), whose sum is σ = 51859314720. Its totient is φ = 13940675200.

The previous prime is 28752643391. The next prime is 28752643463. The reversal of 28752643425 is 52434625782.

It is not a de Polignac number, because 28752643425 - 2¹² = 28752639329 is a prime.

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, 17425020 + ... + 17426669.

It is an arithmetic number, because the mean of its divisors is an integer number (2160804780).

Almost surely, 2^28752643425 is an apocalyptic number.

28752643425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28752643425 is a deficient number, since it is larger than the sum of its proper divisors (23106671295).

28752643425 is a wasteful number, since it uses less digits than its factorization.

28752643425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34851713 (or 34851708 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 48.

The spelling of 28752643425 in words is "twenty-eight billion, seven hundred fifty-two million, six hundred forty-three thousand, four hundred twenty-five".