2256464125105 has 4 divisors (see below), whose sum is σ = 2707756950132. Its totient is φ = 1805171300080.

The previous prime is 2256464125087. The next prime is 2256464125177. The reversal of 2256464125105 is 5015214646522.

It is a happy number.

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 318376934001 + 1938087191104 = 564249^2 + 1392152^2 .

It is not a de Polignac number, because 2256464125105 - 2⁷ = 2256464124977 is a prime.

It is a super-2 number, since 2×2256464125105² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225646412506 + ... + 225646412515.

It is an arithmetic number, because the mean of its divisors is an integer number (676939237533).

Almost surely, 2^{2256464125105} is an apocalyptic number.

It is an amenable number.

2256464125105 is a deficient number, since it is larger than the sum of its proper divisors (451292825027).

2256464125105 is an equidigital number, since it uses as much as digits as its factorization.

2256464125105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451292825026.

The product of its (nonzero) digits is 576000, while the sum is 43.

The spelling of 2256464125105 in words is "two trillion, two hundred fifty-six billion, four hundred sixty-four million, one hundred twenty-five thousand, one hundred five".