265355420 has 72 divisors (see below), whose sum is σ = 625810752. Its totient is φ = 94399360.

The previous prime is 265355417. The next prime is 265355449. The reversal of 265355420 is 24553562.

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, 112574 + ... + 114906.

It is an arithmetic number, because the mean of its divisors is an integer number (8691816).

Almost surely, 2^265355420 is an apocalyptic number.

265355420 is a gapful number since it is divisible by the number (20) 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 265355420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312905376).

265355420 is an abundant number, since it is smaller than the sum of its proper divisors (360455332).

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

265355420 is a wasteful number, since it uses less digits than its factorization.

265355420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411 (or 2398 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 265355420 is about 16289.7335767041. The cubic root of 265355420 is about 642.6028601840.

The spelling of 265355420 in words is "two hundred sixty-five million, three hundred fifty-five thousand, four hundred twenty".