275225640 has 64 divisors (see below), whose sum is σ = 869140800. Its totient is φ = 69530112.

The previous prime is 275225633. The next prime is 275225641. The reversal of 275225640 is 46522572.

It is not an unprimeable number, because it can be changed into a prime (275225641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58077 + ... + 62636.

It is an arithmetic number, because the mean of its divisors is an integer number (13580325).

Almost surely, 2^275225640 is an apocalyptic number.

275225640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275225640 is an abundant number, since it is smaller than the sum of its proper divisors (593915160).

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

275225640 is a wasteful number, since it uses less digits than its factorization.

275225640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120746 (or 120742 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 275225640 is about 16589.9258587855. The cubic root of 275225640 is about 650.4735326541.

The spelling of 275225640 in words is "two hundred seventy-five million, two hundred twenty-five thousand, six hundred forty".