265412778 has 16 divisors (see below), whose sum is σ = 553905216. Its totient is φ = 84624320.

The previous prime is 265412773. The next prime is 265412783. The reversal of 265412778 is 877214562.

265412778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (265412773) and next prime (265412783).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (265412773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961503 + ... + 961778.

It is an arithmetic number, because the mean of its divisors is an integer number (34619076).

Almost surely, 2^265412778 is an apocalyptic number.

265412778 is an abundant number, since it is smaller than the sum of its proper divisors (288492438).

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

265412778 is a wasteful number, since it uses less digits than its factorization.

265412778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923309.

The product of its digits is 188160, while the sum is 42.

The square root of 265412778 is about 16291.4940383011. The cubic root of 265412778 is about 642.6491575355.

The spelling of 265412778 in words is "two hundred sixty-five million, four hundred twelve thousand, seven hundred seventy-eight".