12465 has 12 divisors (see below), whose sum is σ = 21684. Its totient is φ = 6624.

The previous prime is 12457. The next prime is 12473. The reversal of 12465 is 56421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12457) and next prime (12473).

It can be written as a sum of positive squares in 2 ways, for example, as 3249 + 9216 = 57^2 + 96^2 .

It is not a de Polignac number, because 12465 - 2³ = 12457 is a prime.

It is an Ulam number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94 + ... + 183.

It is an arithmetic number, because the mean of its divisors is an integer number (1807).

2¹²⁴⁶⁵ is an apocalyptic number.

12465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12465 is a deficient number, since it is larger than the sum of its proper divisors (9219).

12465 is a wasteful number, since it uses less digits than its factorization.

12465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 285 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12465 is about 111.6467643956. The cubic root of 12465 is about 23.1862631720.

Adding to 12465 its reverse (56421), we get a palindrome (68886).

Subtracting 12465 from its reverse (56421), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 12465 in words is "twelve thousand, four hundred sixty-five".