12512533 has 4 divisors (see below), whose sum is σ = 13650048. Its totient is φ = 11375020.

The previous prime is 12512531. The next prime is 12512557. The reversal of 12512533 is 33521521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33521521 = 11 ⋅3047411.

It is a cyclic number.

It is not a de Polignac number, because 12512533 - 2¹ = 12512531 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12512531) 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, 568741 + ... + 568762.

It is an arithmetic number, because the mean of its divisors is an integer number (3412512).

Almost surely, 2^12512533 is an apocalyptic number.

It is an amenable number.

12512533 is a deficient number, since it is larger than the sum of its proper divisors (1137515).

12512533 is a wasteful number, since it uses less digits than its factorization.

12512533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1137514.

The product of its digits is 900, while the sum is 22.

The square root of 12512533 is about 3537.3058957348. The cubic root of 12512533 is about 232.1569798159.

The spelling of 12512533 in words is "twelve million, five hundred twelve thousand, five hundred thirty-three".