2256531464515 has 16 divisors (see below), whose sum is σ = 2795977866240. Its totient is φ = 1746498036960.

The previous prime is 2256531464503. The next prime is 2256531464527. The reversal of 2256531464515 is 5154641356522.

It is an interprime number because it is at equal distance from previous prime (2256531464503) and next prime (2256531464527).

It is not a de Polignac number, because 2256531464515 - 2¹⁷ = 2256531333443 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1508289 + ... + 2605378.

It is an arithmetic number, because the mean of its divisors is an integer number (174748616640).

Almost surely, 2^{2256531464515} is an apocalyptic number.

2256531464515 is a deficient number, since it is larger than the sum of its proper divisors (539446401725).

2256531464515 is a wasteful number, since it uses less digits than its factorization.

2256531464515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117242.

The product of its digits is 4320000, while the sum is 49.

The spelling of 2256531464515 in words is "two trillion, two hundred fifty-six billion, five hundred thirty-one million, four hundred sixty-four thousand, five hundred fifteen".