27725678220 has 24 divisors (see below), whose sum is σ = 77631899184. Its totient is φ = 7393514176.

The previous prime is 27725678207. The next prime is 27725678249. The reversal of 27725678220 is 2287652772.

It is a self number, because there is not a number n which added to its sum of digits gives 27725678220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231047259 + ... + 231047378.

It is an arithmetic number, because the mean of its divisors is an integer number (3234662466).

Almost surely, 2^27725678220 is an apocalyptic number.

27725678220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27725678220 is an abundant number, since it is smaller than the sum of its proper divisors (49906220964).

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

27725678220 is a wasteful number, since it uses less digits than its factorization.

27725678220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462094649 (or 462094647 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 27725678220 in words is "twenty-seven billion, seven hundred twenty-five million, six hundred seventy-eight thousand, two hundred twenty".