12231525 has 24 divisors (see below), whose sum is σ = 20516544. Its totient is φ = 6428800.

The previous prime is 12231523. The next prime is 12231539. The reversal of 12231525 is 52513221.

It is not a de Polignac number, because 12231525 - 2¹ = 12231523 is a prime.

It is a super-2 number, since 2×12231525² = 299220407651250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4177 + ... + 6473.

It is an arithmetic number, because the mean of its divisors is an integer number (854856).

Almost surely, 2^12231525 is an apocalyptic number.

12231525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12231525 is a deficient number, since it is larger than the sum of its proper divisors (8285019).

12231525 is a wasteful number, since it uses less digits than its factorization.

12231525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381 (or 2376 counting only the distinct ones).

The product of its digits is 600, while the sum is 21.

The square root of 12231525 is about 3497.3597184162. The cubic root of 12231525 is about 230.4058681171.

Adding to 12231525 its reverse (52513221), we get a palindrome (64744746).

The spelling of 12231525 in words is "twelve million, two hundred thirty-one thousand, five hundred twenty-five".