265581825 has 12 divisors (see below), whose sum is σ = 439095408. Its totient is φ = 141643600.

The previous prime is 265581821. The next prime is 265581839. The reversal of 265581825 is 528185562.

265581825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 265581825 - 2² = 265581821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265581821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1770471 + ... + 1770620.

It is an arithmetic number, because the mean of its divisors is an integer number (36591284).

Almost surely, 2^265581825 is an apocalyptic number.

265581825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265581825 is a deficient number, since it is larger than the sum of its proper divisors (173513583).

265581825 is a wasteful number, since it uses less digits than its factorization.

265581825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541104 (or 3541099 counting only the distinct ones).

The product of its digits is 192000, while the sum is 42.

The square root of 265581825 is about 16296.6814106431. The cubic root of 265581825 is about 642.7855675161.

The spelling of 265581825 in words is "two hundred sixty-five million, five hundred eighty-one thousand, eight hundred twenty-five".