265043064 has 128 divisors (see below), whose sum is σ = 805593600. Its totient is φ = 71554560.

The previous prime is 265043057. The next prime is 265043081. The reversal of 265043064 is 460340562.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98197 + ... + 100859.

It is an arithmetic number, because the mean of its divisors is an integer number (6293700).

Almost surely, 2^265043064 is an apocalyptic number.

265043064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265043064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402796800).

265043064 is an abundant number, since it is smaller than the sum of its proper divisors (540550536).

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

265043064 is a wasteful number, since it uses less digits than its factorization.

265043064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2725 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 265043064 is about 16280.1432426131. The cubic root of 265043064 is about 642.3506202910.

The spelling of 265043064 in words is "two hundred sixty-five million, forty-three thousand, sixty-four".