265120900 has 72 divisors (see below), whose sum is σ = 649333440. Its totient is φ = 93072000.

The previous prime is 265120853. The next prime is 265120949. The reversal of 265120900 is 9021562.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 27745 + ... + 36055.

It is an arithmetic number, because the mean of its divisors is an integer number (9018520).

Almost surely, 2^265120900 is an apocalyptic number.

265120900 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 265120900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324666720).

265120900 is an abundant number, since it is smaller than the sum of its proper divisors (384212540).

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

265120900 is a wasteful number, since it uses less digits than its factorization.

265120900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8365 (or 8358 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 265120900 is about 16282.5335866382. The cubic root of 265120900 is about 642.4134944878.

The spelling of 265120900 in words is "two hundred sixty-five million, one hundred twenty thousand, nine hundred".