2745771225 has 48 divisors (see below), whose sum is σ = 4803353280. Its totient is φ = 1380153600.

The previous prime is 2745771199. The next prime is 2745771229. The reversal of 2745771225 is 5221775472.

It is a happy number.

It is not a de Polignac number, because 2745771225 - 2⁷ = 2745771097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2745771229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275835 + ... + 285615.

It is an arithmetic number, because the mean of its divisors is an integer number (100069860).

Almost surely, 2^2745771225 is an apocalyptic number.

2745771225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2745771225 is a deficient number, since it is larger than the sum of its proper divisors (2057582055).

2745771225 is a wasteful number, since it uses less digits than its factorization.

2745771225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010 (or 10005 counting only the distinct ones).

The product of its digits is 274400, while the sum is 42.

The square root of 2745771225 is about 52400.1071086692. The cubic root of 2745771225 is about 1400.3011639513.

It can be divided in two parts, 2745771 and 225, that added together give a triangular number (2745996 = T₂₃₄₃).

The spelling of 2745771225 in words is "two billion, seven hundred forty-five million, seven hundred seventy-one thousand, two hundred twenty-five".