265085649 has 64 divisors (see below), whose sum is σ = 429004800. Its totient is φ = 161320896.

The previous prime is 265085633. The next prime is 265085657. The reversal of 265085649 is 946580562.

It is not a de Polignac number, because 265085649 - 2⁴ = 265085633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265085609) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1907022 + ... + 1907160.

It is an arithmetic number, because the mean of its divisors is an integer number (6703200).

Almost surely, 2^265085649 is an apocalyptic number.

It is an amenable number.

265085649 is a deficient number, since it is larger than the sum of its proper divisors (163919151).

265085649 is a wasteful number, since it uses less digits than its factorization.

265085649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 265085649 is about 16281.4510716951. The cubic root of 265085649 is about 642.3850210356.

The spelling of 265085649 in words is "two hundred sixty-five million, eighty-five thousand, six hundred forty-nine".