2211525 has 18 divisors (see below), whose sum is σ = 3961490. Its totient is φ = 1179360.

The previous prime is 2211493. The next prime is 2211541. The reversal of 2211525 is 5251122.

It can be written as a sum of positive squares in 3 ways, for example, as 492804 + 1718721 = 702^2 + 1311^2 .

It is not a de Polignac number, because 2211525 - 2⁵ = 2211493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211498 and 2211507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4690 + ... + 5139.

2^2211525 is an apocalyptic number.

2211525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2211525 is a deficient number, since it is larger than the sum of its proper divisors (1749965).

2211525 is a wasteful number, since it uses less digits than its factorization.

2211525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9845 (or 9837 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 2211525 is about 1487.1196992845. The cubic root of 2211525 is about 130.2858601065.

Adding to 2211525 its reverse (5251122), we get a palindrome (7462647).

The spelling of 2211525 in words is "two million, two hundred eleven thousand, five hundred twenty-five".