12993525 has 72 divisors (see below), whose sum is σ = 25534080. Its totient is φ = 6289920.

The previous prime is 12993509. The next prime is 12993571. The reversal of 12993525 is 52539921.

It is a happy number.

12993525 is a `hidden beast` number, since 129 + 9 + 3 + 525 = 666.

It is not a de Polignac number, because 12993525 - 2⁴ = 12993509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12993525.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 164436 + ... + 164514.

It is an arithmetic number, because the mean of its divisors is an integer number (354640).

It is a vampire number, since it can be written as 2193 ⋅ 5925 (with its own digits).

Almost surely, 2^12993525 is an apocalyptic number.

12993525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12993525 is a deficient number, since it is larger than the sum of its proper divisors (12540555).

12993525 is a wasteful number, since it uses less digits than its factorization.

12993525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 147 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 12993525 is about 3604.6532426851. The cubic root of 12993525 is about 235.0944241041.

The spelling of 12993525 in words is "twelve million, nine hundred ninety-three thousand, five hundred twenty-five".