13256252465 has 8 divisors (see below), whose sum is σ = 15908309928. Its totient is φ = 10604464000.

The previous prime is 13256252459. The next prime is 13256252467. The reversal of 13256252465 is 56425265231.

It can be written as a sum of positive squares in 4 ways, for example, as 287370304 + 12968882161 = 16952^2 + 113881^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13256252465 - 2³² = 8961285169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13256252467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64715 + ... + 175215.

It is an arithmetic number, because the mean of its divisors is an integer number (1988538741).

Almost surely, 2^13256252465 is an apocalyptic number.

It is an amenable number.

13256252465 is a deficient number, since it is larger than the sum of its proper divisors (2652057463).

13256252465 is a wasteful number, since it uses less digits than its factorization.

13256252465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134499.

The product of its digits is 432000, while the sum is 41.

The spelling of 13256252465 in words is "thirteen billion, two hundred fifty-six million, two hundred fifty-two thousand, four hundred sixty-five".