12252581 has 12 divisors (see below), whose sum is σ = 13605900. Its totient is φ = 11024640.

The previous prime is 12252551. The next prime is 12252599. The reversal of 12252581 is 18525221.

It can be written as a sum of positive squares in 2 ways, for example, as 3496900 + 8755681 = 1870^2 + 2959^2 .

It is not a de Polignac number, because 12252581 - 2¹⁴ = 12236197 is a prime.

It is a super-2 number, since 2×12252581² = 300251482323122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12252581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12252551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12725 + ... + 13653.

It is an arithmetic number, because the mean of its divisors is an integer number (1133825).

Almost surely, 2^12252581 is an apocalyptic number.

12252581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12252581 is a deficient number, since it is larger than the sum of its proper divisors (1353319).

12252581 is a wasteful number, since it uses less digits than its factorization.

12252581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060 (or 1049 counting only the distinct ones).

The product of its digits is 1600, while the sum is 26.

The square root of 12252581 is about 3500.3686948663. The cubic root of 12252581 is about 230.5380033110.

The spelling of 12252581 in words is "twelve million, two hundred fifty-two thousand, five hundred eighty-one".