25528746220 has 24 divisors (see below), whose sum is σ = 53625023424. Its totient is φ = 10208706816.

The previous prime is 25528746169. The next prime is 25528746253. The reversal of 25528746220 is 2264782552.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 98692 + ... + 246571.

It is an arithmetic number, because the mean of its divisors is an integer number (2234375976).

Almost surely, 2^25528746220 is an apocalyptic number.

25528746220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25528746220 is an abundant number, since it is smaller than the sum of its proper divisors (28096277204).

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

25528746220 is a wasteful number, since it uses less digits than its factorization.

25528746220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348969 (or 348967 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 43.

The spelling of 25528746220 in words is "twenty-five billion, five hundred twenty-eight million, seven hundred forty-six thousand, two hundred twenty".