2225540 has 24 divisors (see below), whose sum is σ = 4704000. Its totient is φ = 884448.

The previous prime is 2225533. The next prime is 2225543. The reversal of 2225540 is 455222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2225543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 4709.

It is an arithmetic number, because the mean of its divisors is an integer number (196000).

2^2225540 is an apocalyptic number.

2225540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2225540 is an abundant number, since it is smaller than the sum of its proper divisors (2478460).

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

2225540 is a wasteful number, since it uses less digits than its factorization.

2225540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2225540 is about 1491.8243864477. The cubic root of 2225540 is about 130.5604990499.

The spelling of 2225540 in words is "two million, two hundred twenty-five thousand, five hundred forty".