265251264 has 28 divisors (see below), whose sum is σ = 701811144. Its totient is φ = 88417024.

The previous prime is 265251251. The next prime is 265251271. The reversal of 265251264 is 462152562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690567 + ... + 690950.

Almost surely, 2^265251264 is an apocalyptic number.

265251264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

265251264 is an abundant number, since it is smaller than the sum of its proper divisors (436559880).

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

265251264 is a wasteful number, since it uses less digits than its factorization.

265251264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381532 (or 1381522 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 265251264 is about 16286.5362800075. The cubic root of 265251264 is about 642.5187720799.

The spelling of 265251264 in words is "two hundred sixty-five million, two hundred fifty-one thousand, two hundred sixty-four".