265209480 has 96 divisors (see below), whose sum is σ = 865963800. Its totient is φ = 70391808.

The previous prime is 265209479. The next prime is 265209541. The reversal of 265209480 is 84902562.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 264973284 + 236196 = 16278^2 + 486^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

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, 80832 + ... + 84048.

Almost surely, 2^265209480 is an apocalyptic number.

265209480 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 265209480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432981900).

265209480 is an abundant number, since it is smaller than the sum of its proper divisors (600754320).

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

265209480 is a wasteful number, since it uses less digits than its factorization.

265209480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3456 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 265209480 is about 16285.2534521266. The cubic root of 265209480 is about 642.4850324805.

The spelling of 265209480 in words is "two hundred sixty-five million, two hundred nine thousand, four hundred eighty".