12542265 has 12 divisors (see below), whose sum is σ = 21740004. Its totient is φ = 6689184.

The previous prime is 12542263. The next prime is 12542267. The reversal of 12542265 is 56224521.

It is an interprime number because it is at equal distance from previous prime (12542263) and next prime (12542267).

It can be written as a sum of positive squares in 2 ways, for example, as 5588496 + 6953769 = 2364^2 + 2637^2 .

It is not a de Polignac number, because 12542265 - 2¹ = 12542263 is a prime.

It is a super-2 number, since 2×12542265² = 314616822660450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12542263) 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, 139314 + ... + 139403.

It is an arithmetic number, because the mean of its divisors is an integer number (1811667).

Almost surely, 2^12542265 is an apocalyptic number.

12542265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12542265 is a deficient number, since it is larger than the sum of its proper divisors (9197739).

12542265 is a wasteful number, since it uses less digits than its factorization.

12542265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278728 (or 278725 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 12542265 is about 3541.5060355730. The cubic root of 12542265 is about 232.3407164302.

Adding to 12542265 its reverse (56224521), we get a palindrome (68766786).

The spelling of 12542265 in words is "twelve million, five hundred forty-two thousand, two hundred sixty-five".