265995961 has 24 divisors (see below), whose sum is σ = 339220224. Its totient is φ = 206246880.

The previous prime is 265995949. The next prime is 265996001. The reversal of 265995961 is 169599562.

It is not a de Polignac number, because 265995961 - 2¹¹ = 265993913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 265995899 and 265995908.

It is not an unprimeable number, because it can be changed into a prime (265995911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119091 + ... + 121303.

It is an arithmetic number, because the mean of its divisors is an integer number (14134176).

Almost surely, 2^265995961 is an apocalyptic number.

It is an amenable number.

265995961 is a deficient number, since it is larger than the sum of its proper divisors (73224263).

265995961 is a wasteful number, since it uses less digits than its factorization.

265995961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2454 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 52.

The square root of 265995961 is about 16309.3826063404. The cubic root of 265995961 is about 643.1195040177.

The spelling of 265995961 in words is "two hundred sixty-five million, nine hundred ninety-five thousand, nine hundred sixty-one".