2231525 has 6 divisors (see below), whose sum is σ = 2767122. Its totient is φ = 1785200.

The previous prime is 2231519. The next prime is 2231533. The reversal of 2231525 is 5251322.

It can be written as a sum of positive squares in 3 ways, for example, as 82369 + 2149156 = 287^2 + 1466^2 .

It is not a de Polignac number, because 2231525 - 2⁶ = 2231461 is a prime.

It is a super-3 number, since 3×2231525³ = 33337000738433484375, which contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2231497 and 2231506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44606 + ... + 44655.

It is an arithmetic number, because the mean of its divisors is an integer number (461187).

2^2231525 is an apocalyptic number.

2231525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2231525 is a deficient number, since it is larger than the sum of its proper divisors (535597).

2231525 is an equidigital number, since it uses as much as digits as its factorization.

2231525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89271 (or 89266 counting only the distinct ones).

The product of its digits is 600, while the sum is 20.

The square root of 2231525 is about 1493.8289728078. The cubic root of 2231525 is about 130.6774302474.

Adding to 2231525 its reverse (5251322), we get a palindrome (7482847).

The spelling of 2231525 in words is "two million, two hundred thirty-one thousand, five hundred twenty-five".