12512538 has 12 divisors (see below), whose sum is σ = 27110538. Its totient is φ = 4170840.

The previous prime is 12512531. The next prime is 12512557. The reversal of 12512538 is 83521521.

It is a happy number.

12512538 is a `hidden beast` number, since 125 + 1 + 2 + 538 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7436529 + 5076009 = 2727^2 + 2253^2 .

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 5 ways as a sum of consecutive naturals, for example, 347553 + ... + 347588.

Almost surely, 2^12512538 is an apocalyptic number.

12512538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12512538 is an abundant number, since it is smaller than the sum of its proper divisors (14598000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12512538 is a wasteful number, since it uses less digits than its factorization.

12512538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695149 (or 695146 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 12512538 is about 3537.3066024873. The cubic root of 12512538 is about 232.1570107392.

The spelling of 12512538 in words is "twelve million, five hundred twelve thousand, five hundred thirty-eight".