12545463265 has 4 divisors (see below), whose sum is σ = 15054555924. Its totient is φ = 10036370608.

The previous prime is 12545463257. The next prime is 12545463277. The reversal of 12545463265 is 56236454521.

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 6255069921 + 6290393344 = 79089^2 + 79312^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545463265 - 2³ = 12545463257 is a prime.

It is a Duffinian 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, 1254546322 + ... + 1254546331.

It is an arithmetic number, because the mean of its divisors is an integer number (3763638981).

Almost surely, 2^12545463265 is an apocalyptic number.

It is an amenable number.

12545463265 is a deficient number, since it is larger than the sum of its proper divisors (2509092659).

12545463265 is an equidigital number, since it uses as much as digits as its factorization.

12545463265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509092658.

The product of its digits is 864000, while the sum is 43.

The spelling of 12545463265 in words is "twelve billion, five hundred forty-five million, four hundred sixty-three thousand, two hundred sixty-five".