265052656 has 40 divisors (see below), whose sum is σ = 568142208. Its totient is φ = 118776000.

The previous prime is 265052653. The next prime is 265052657. The reversal of 265052656 is 656250562.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265052651) 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, 1891 + ... + 23101.

Almost surely, 2^265052656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265052656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284071104).

265052656 is an abundant number, since it is smaller than the sum of its proper divisors (303089552).

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

265052656 is a wasteful number, since it uses less digits than its factorization.

265052656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21301 (or 21295 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 265052656 is about 16280.4378319503. The cubic root of 265052656 is about 642.3583691611.

It can be divided in two parts, 26505 and 2656, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 265052656 in words is "two hundred sixty-five million, fifty-two thousand, six hundred fifty-six".