265253436 has 72 divisors (see below), whose sum is σ = 785008224. Its totient is φ = 73935360.

The previous prime is 265253419. The next prime is 265253467. The reversal of 265253436 is 634352562.

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

It is a self number, because there is not a number n which added to its sum of digits gives 265253436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2505 + ... + 23168.

It is an arithmetic number, because the mean of its divisors is an integer number (10902892).

Almost surely, 2^265253436 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 265253436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392504112).

265253436 is an abundant number, since it is smaller than the sum of its proper divisors (519754788).

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

265253436 is a wasteful number, since it uses less digits than its factorization.

265253436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25731 (or 25726 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 265253436 is about 16286.6029607159. The cubic root of 265253436 is about 642.5205258221.

The spelling of 265253436 in words is "two hundred sixty-five million, two hundred fifty-three thousand, four hundred thirty-six".