275425280 has 96 divisors (see below), whose sum is σ = 712038600. Its totient is φ = 101646336.

The previous prime is 275425237. The next prime is 275425301. The reversal of 275425280 is 82524572.

It can be written as a sum of positive squares in 4 ways, for example, as 120472576 + 154952704 = 10976^2 + 12448^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 275425280.

It is a congruent number.

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, 132086 + ... + 134154.

Almost surely, 2^275425280 is an apocalyptic number.

275425280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275425280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356019300).

275425280 is an abundant number, since it is smaller than the sum of its proper divisors (436613320).

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

275425280 is a wasteful number, since it uses less digits than its factorization.

275425280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109 (or 2089 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 275425280 is about 16595.9416725897. The cubic root of 275425280 is about 650.6307723040.

The spelling of 275425280 in words is "two hundred seventy-five million, four hundred twenty-five thousand, two hundred eighty".