275525555280 has 80 divisors (see below), whose sum is σ = 860363843904. Its totient is φ = 72937169920.

The previous prime is 275525555243. The next prime is 275525555311. The reversal of 275525555280 is 82555525572.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×275525555280² (a number of 24 digits) contains 22 as substring.

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, 4156986 + ... + 4222745.

Almost surely, 2^275525555280 is an apocalyptic number.

275525555280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275525555280 is an abundant number, since it is smaller than the sum of its proper divisors (584838288624).

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

275525555280 is a wasteful number, since it uses less digits than its factorization.

275525555280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379884 (or 8379878 counting only the distinct ones).

The product of its (nonzero) digits is 7000000, while the sum is 51.

The spelling of 275525555280 in words is "two hundred seventy-five billion, five hundred twenty-five million, five hundred fifty-five thousand, two hundred eighty".