12151265 has 12 divisors (see below), whose sum is σ = 16962516. Its totient is φ = 8332128.

The previous prime is 12151247. The next prime is 12151267. The reversal of 12151265 is 56215121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2140369 + 10010896 = 1463^2 + 3164^2 .

It is not a de Polignac number, because 12151265 - 2¹⁸ = 11889121 is a prime.

It is a super-2 number, since 2×12151265² = 295306482200450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12151265.

It is not an unprimeable number, because it can be changed into a prime (12151267) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 24554 + ... + 25043.

It is an arithmetic number, because the mean of its divisors is an integer number (1413543).

Almost surely, 2^12151265 is an apocalyptic number.

It is an amenable number.

12151265 is a deficient number, since it is larger than the sum of its proper divisors (4811251).

12151265 is an equidigital number, since it uses as much as digits as its factorization.

12151265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49616 (or 49609 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 12151265 is about 3485.8664633058. The cubic root of 12151265 is about 229.9008078892.

Adding to 12151265 its reverse (56215121), we get a palindrome (68366386).

The spelling of 12151265 in words is "twelve million, one hundred fifty-one thousand, two hundred sixty-five".