27257211220 has 48 divisors (see below), whose sum is σ = 59749135488. Its totient is φ = 10425303680.

The previous prime is 27257211211. The next prime is 27257211259. The reversal of 27257211220 is 2211275272.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1638987 + ... + 1655533.

It is an arithmetic number, because the mean of its divisors is an integer number (1244773656).

Almost surely, 2^27257211220 is an apocalyptic number.

27257211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27257211220 is an abundant number, since it is smaller than the sum of its proper divisors (32491924268).

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

27257211220 is a wasteful number, since it uses less digits than its factorization.

27257211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20160 (or 20158 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

Adding to 27257211220 its reverse (2211275272), we get a palindrome (29468486492).

The spelling of 27257211220 in words is "twenty-seven billion, two hundred fifty-seven million, two hundred eleven thousand, two hundred twenty".