255069669 has 4 divisors (see below), whose sum is σ = 340092896. Its totient is φ = 170046444.

The previous prime is 255069667. The next prime is 255069713. The reversal of 255069669 is 966960552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 255069669 - 2¹ = 255069667 is a prime.

It is a super-2 number, since 2×255069669² = 130121072087539122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255069667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42511609 + ... + 42511614.

It is an arithmetic number, because the mean of its divisors is an integer number (85023224).

Almost surely, 2^255069669 is an apocalyptic number.

It is an amenable number.

255069669 is a deficient number, since it is larger than the sum of its proper divisors (85023227).

255069669 is an equidigital number, since it uses as much as digits as its factorization.

255069669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85023226.

The product of its (nonzero) digits is 874800, while the sum is 48.

The square root of 255069669 is about 15970.9006947010. The cubic root of 255069669 is about 634.1903161061.

The spelling of 255069669 in words is "two hundred fifty-five million, sixty-nine thousand, six hundred sixty-nine".