12524789 has 4 divisors (see below), whose sum is σ = 12533580. Its totient is φ = 12516000.

The previous prime is 12524773. The next prime is 12524797. The reversal of 12524789 is 98742521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98742521 = 7417 ⋅13313.

It can be written as a sum of positive squares in 2 ways, for example, as 9102289 + 3422500 = 3017^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 12524789 - 2⁴ = 12524773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12524689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1712 + ... + 5289.

It is an arithmetic number, because the mean of its divisors is an integer number (3133395).

Almost surely, 2^12524789 is an apocalyptic number.

It is an amenable number.

12524789 is a deficient number, since it is larger than the sum of its proper divisors (8791).

12524789 is an equidigital number, since it uses as much as digits as its factorization.

12524789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8790.

The product of its digits is 40320, while the sum is 38.

The square root of 12524789 is about 3539.0378636008. The cubic root of 12524789 is about 232.2327541737.

The spelling of 12524789 in words is "twelve million, five hundred twenty-four thousand, seven hundred eighty-nine".