12151525 has 6 divisors (see below), whose sum is σ = 15067922. Its totient is φ = 9721200.

The previous prime is 12151523. The next prime is 12151553. The reversal of 12151525 is 52515121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 103684 + 12047841 = 322^2 + 3471^2 .

It is not a de Polignac number, because 12151525 - 2¹ = 12151523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12151496 and 12151505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243006 + ... + 243055.

Almost surely, 2^12151525 is an apocalyptic number.

It is an amenable number.

12151525 is a deficient number, since it is larger than the sum of its proper divisors (2916397).

12151525 is an equidigital number, since it uses as much as digits as its factorization.

12151525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486071 (or 486066 counting only the distinct ones).

The product of its digits is 500, while the sum is 22.

The square root of 12151525 is about 3485.9037565601. The cubic root of 12151525 is about 229.9024476028.

Adding to 12151525 its reverse (52515121), we get a palindrome (64666646).

The spelling of 12151525 in words is "twelve million, one hundred fifty-one thousand, five hundred twenty-five".