256735111225145 has 16 divisors (see below), whose sum is σ = 372805270754688. Its totient is φ = 165691231445760.

The previous prime is 256735111225127. The next prime is 256735111225181. The reversal of 256735111225145 is 541522111537652.

It is a happy number.

It is not a de Polignac number, because 256735111225145 - 2¹⁶ = 256735111159609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256735111225093 and 256735111225102.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215743790351 + ... + 215743791540.

It is an arithmetic number, because the mean of its divisors is an integer number (23300329422168).

Almost surely, 2^{256735111225145} is an apocalyptic number.

It is an amenable number.

256735111225145 is a deficient number, since it is larger than the sum of its proper divisors (116070159529543).

256735111225145 is a wasteful number, since it uses less digits than its factorization.

256735111225145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431487581920.

The product of its digits is 2520000, while the sum is 50.

The spelling of 256735111225145 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, one hundred eleven million, two hundred twenty-five thousand, one hundred forty-five".