265097880 has 128 divisors (see below), whose sum is σ = 930240000. Its totient is φ = 66966912.

The previous prime is 265097879. The next prime is 265097939. The reversal of 265097880 is 88790562.

265097880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14061 + ... + 26979.

It is an arithmetic number, because the mean of its divisors is an integer number (7267500).

Almost surely, 2^265097880 is an apocalyptic number.

265097880 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 265097880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465120000).

265097880 is an abundant number, since it is smaller than the sum of its proper divisors (665142120).

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

265097880 is a wasteful number, since it uses less digits than its factorization.

265097880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958 (or 12948 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 265097880 is about 16281.8266788466. The cubic root of 265097880 is about 642.3949007234.

The spelling of 265097880 in words is "two hundred sixty-five million, ninety-seven thousand, eight hundred eighty".