265249644 has 24 divisors (see below), whose sum is σ = 675181248. Its totient is φ = 80378640.

The previous prime is 265249643. The next prime is 265249679. The reversal of 265249644 is 446942562.

It is a junction number, because it is equal to n+sod(n) for n = 265249596 and 265249605.

It is not an unprimeable number, because it can be changed into a prime (265249643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004602 + ... + 1004865.

It is an arithmetic number, because the mean of its divisors is an integer number (28132552).

Almost surely, 2^265249644 is an apocalyptic number.

It is an amenable number.

265249644 is an abundant number, since it is smaller than the sum of its proper divisors (409931604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265249644 is a wasteful number, since it uses less digits than its factorization.

265249644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009485 (or 2009483 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 265249644 is about 16286.4865455997. The cubic root of 265249644 is about 642.5174640340.

The spelling of 265249644 in words is "two hundred sixty-five million, two hundred forty-nine thousand, six hundred forty-four".