2775252500 has 60 divisors (see below), whose sum is σ = 6082868484. Its totient is φ = 1107552000.

The previous prime is 2775252449. The next prime is 2775252511. The reversal of 2775252500 is 52525772.

It can be written as a sum of positive squares in 10 ways, for example, as 2393753476 + 381499024 = 48926^2 + 19532^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1391504 + ... + 1393496.

Almost surely, 2^2775252500 is an apocalyptic number.

2775252500 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 2775252500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3041434242).

2775252500 is an abundant number, since it is smaller than the sum of its proper divisors (3307615984).

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

2775252500 is a wasteful number, since it uses less digits than its factorization.

2775252500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574 (or 2557 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 35.

The square root of 2775252500 is about 52680.6653336877. The cubic root of 2775252500 is about 1405.2949993314.

The spelling of 2775252500 in words is "two billion, seven hundred seventy-five million, two hundred fifty-two thousand, five hundred".