2225861 has 8 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 1904320.

The previous prime is 2225851. The next prime is 2225863. The reversal of 2225861 is 1685222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2225861 - 2¹⁰ = 2224837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2225861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2225863) 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, 5765 + ... + 6138.

It is an arithmetic number, because the mean of its divisors is an integer number (321408).

2^2225861 is an apocalyptic number.

It is an amenable number.

2225861 is a deficient number, since it is larger than the sum of its proper divisors (345403).

2225861 is a wasteful number, since it uses less digits than its factorization.

2225861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11931.

The product of its digits is 1920, while the sum is 26.

The square root of 2225861 is about 1491.9319689584. The cubic root of 2225861 is about 130.5667758645.

The spelling of 2225861 in words is "two million, two hundred twenty-five thousand, eight hundred sixty-one".