265055725577 has 4 divisors (see below), whose sum is σ = 267629082240. Its totient is φ = 262482368916.

The previous prime is 265055725559. The next prime is 265055725579. The reversal of 265055725577 is 775527550562.

265055725577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 775527550562 = 2 ⋅387763775281.

It is a cyclic number.

It is not a de Polignac number, because 265055725577 - 2²⁸ = 264787290121 is a prime.

It is a super-3 number, since 3×265055725577³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265055725579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286678177 + ... + 1286678382.

It is an arithmetic number, because the mean of its divisors is an integer number (66907270560).

Almost surely, 2^265055725577 is an apocalyptic number.

It is an amenable number.

265055725577 is a deficient number, since it is larger than the sum of its proper divisors (2573356663).

265055725577 is a wasteful number, since it uses less digits than its factorization.

265055725577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573356662.

The product of its (nonzero) digits is 25725000, while the sum is 56.

The spelling of 265055725577 in words is "two hundred sixty-five billion, fifty-five million, seven hundred twenty-five thousand, five hundred seventy-seven".