2787225 has 24 divisors (see below), whose sum is σ = 5267520. Its totient is φ = 1273920.

The previous prime is 2787181. The next prime is 2787227. The reversal of 2787225 is 5227872.

2787225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2787225 - 2⁷ = 2787097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2787227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2130 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (219480).

2^2787225 is an apocalyptic number.

2787225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2787225 is a deficient number, since it is larger than the sum of its proper divisors (2480295).

2787225 is a wasteful number, since it uses less digits than its factorization.

2787225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5329 (or 5324 counting only the distinct ones).

The product of its digits is 15680, while the sum is 33.

The square root of 2787225 is about 1669.4984276722. The cubic root of 2787225 is about 140.7312924773.

It can be divided in two parts, 278 and 7225, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 2787225 in words is "two million, seven hundred eighty-seven thousand, two hundred twenty-five".