265681152 has 162 divisors, whose sum is σ = 842877126. Its totient is φ = 80424960.

The previous prime is 265681139. The next prime is 265681153. The reversal of 265681152 is 251186562.

It can be written as a sum of positive squares in only one way, i.e., 218566656 + 47114496 = 14784^2 + 6864^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (265681153) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 278308 + ... + 279260.

Almost surely, 2^265681152 is an apocalyptic number.

265681152 is a gapful number since it is divisible by the number (22) 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 265681152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421438563).

265681152 is an abundant number, since it is smaller than the sum of its proper divisors (577195974).

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

265681152 is a wasteful number, since it uses less digits than its factorization.

265681152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997 (or 969 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 265681152 is about 16299.7285866974. The cubic root of 265681152 is about 642.8656909763.

The spelling of 265681152 in words is "two hundred sixty-five million, six hundred eighty-one thousand, one hundred fifty-two".