12585149 has 4 divisors (see below), whose sum is σ = 12696636. Its totient is φ = 12473664.

The previous prime is 12585137. The next prime is 12585161. The reversal of 12585149 is 94158521.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12585137) and next prime (12585161).

It can be written as a sum of positive squares in 2 ways, for example, as 6300100 + 6285049 = 2510^2 + 2507^2 .

It is a cyclic number.

It is not a de Polignac number, because 12585149 - 2¹² = 12581053 is a prime.

It is a super-3 number, since 3×12585149³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12585169) 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, 55574 + ... + 55799.

It is an arithmetic number, because the mean of its divisors is an integer number (3174159).

Almost surely, 2^12585149 is an apocalyptic number.

It is an amenable number.

12585149 is a deficient number, since it is larger than the sum of its proper divisors (111487).

12585149 is a wasteful number, since it uses less digits than its factorization.

12585149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111486.

The product of its digits is 14400, while the sum is 35.

The square root of 12585149 is about 3547.5553554525. Note that the first 3 decimals coincide. The cubic root of 12585149 is about 232.6052184953.

The spelling of 12585149 in words is "twelve million, five hundred eighty-five thousand, one hundred forty-nine".