2225718 has 40 divisors (see below), whose sum is σ = 5445000. Its totient is φ = 673920.

The previous prime is 2225701. The next prime is 2225747. The reversal of 2225718 is 8175222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2225691 and 2225700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1158 + ... + 2406.

It is an arithmetic number, because the mean of its divisors is an integer number (136125).

2^2225718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2225718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2722500).

2225718 is an abundant number, since it is smaller than the sum of its proper divisors (3219282).

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

2225718 is a wasteful number, since it uses less digits than its factorization.

2225718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1265 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2225718 is about 1491.8840437514. The cubic root of 2225718 is about 130.5639797257.

The spelling of 2225718 in words is "two million, two hundred twenty-five thousand, seven hundred eighteen".