265134451025121 has 4 divisors (see below), whose sum is σ = 353512601366832. Its totient is φ = 176756300683412.

The previous prime is 265134451025089. The next prime is 265134451025177. The reversal of 265134451025121 is 121520154431562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 265134451025121 - 2⁵ = 265134451025089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265134451025221) by changing a digit.

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, 44189075170851 + ... + 44189075170856.

It is an arithmetic number, because the mean of its divisors is an integer number (88378150341708).

Almost surely, 2^{265134451025121} is an apocalyptic number.

It is an amenable number.

265134451025121 is a deficient number, since it is larger than the sum of its proper divisors (88378150341711).

265134451025121 is an equidigital number, since it uses as much as digits as its factorization.

265134451025121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88378150341710.

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 265134451025121 in words is "two hundred sixty-five trillion, one hundred thirty-four billion, four hundred fifty-one million, twenty-five thousand, one hundred twenty-one".