2225878 has 12 divisors (see below), whose sum is σ = 3547692. Its totient is φ = 1047200.

The previous prime is 2225863. The next prime is 2225879. The reversal of 2225878 is 8785222.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a d-powerful number, because it can be written as 2¹³ + 2¹⁷ + 2¹⁷ + 5⁹ + 8 + 7⁴ + 8 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1348 + ... + 2503.

It is an arithmetic number, because the mean of its divisors is an integer number (295641).

2^2225878 is an apocalyptic number.

2225878 is a deficient number, since it is larger than the sum of its proper divisors (1321814).

2225878 is a wasteful number, since it uses less digits than its factorization.

2225878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887 (or 3870 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 2225878 is about 1491.9376662582. The cubic root of 2225878 is about 130.5671082646.

The spelling of 2225878 in words is "two million, two hundred twenty-five thousand, eight hundred seventy-eight".