12455200565 has 4 divisors (see below), whose sum is σ = 14946240684. Its totient is φ = 9964160448.

The previous prime is 12455200547. The next prime is 12455200613. The reversal of 12455200565 is 56500255421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1836722449 + 10618478116 = 42857^2 + 103046^2 .

It is a cyclic number.

It is not a de Polignac number, because 12455200565 - 2¹⁰ = 12455199541 is a prime.

It is a super-2 number, since 2×12455200565² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245520052 + ... + 1245520061.

It is an arithmetic number, because the mean of its divisors is an integer number (3736560171).

Almost surely, 2^12455200565 is an apocalyptic number.

It is an amenable number.

12455200565 is a deficient number, since it is larger than the sum of its proper divisors (2491040119).

12455200565 is an equidigital number, since it uses as much as digits as its factorization.

12455200565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491040118.

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 12455200565 its reverse (56500255421), we get a palindrome (68955455986).

The spelling of 12455200565 in words is "twelve billion, four hundred fifty-five million, two hundred thousand, five hundred sixty-five".