2211625 has 16 divisors (see below), whose sum is σ = 2974608. Its totient is φ = 1632000.

The previous prime is 2211623. The next prime is 2211647. The reversal of 2211625 is 5261122.

It can be written as a sum of positive squares in 8 ways, for example, as 1527696 + 683929 = 1236^2 + 827^2 .

It is not a de Polignac number, because 2211625 - 2¹ = 2211623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945 + ... + 2305.

It is an arithmetic number, because the mean of its divisors is an integer number (185913).

2^2211625 is an apocalyptic number.

2211625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2211625 is a deficient number, since it is larger than the sum of its proper divisors (762983).

2211625 is a wasteful number, since it uses less digits than its factorization.

2211625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389 (or 1379 counting only the distinct ones).

The product of its digits is 240, while the sum is 19.

The square root of 2211625 is about 1487.1533209458. The cubic root of 2211625 is about 130.2878238178.

Adding to 2211625 its reverse (5261122), we get a palindrome (7472747).

The spelling of 2211625 in words is "two million, two hundred eleven thousand, six hundred twenty-five".