255250505 has 4 divisors (see below), whose sum is σ = 306300612. Its totient is φ = 204200400.

The previous prime is 255250477. The next prime is 255250507. The reversal of 255250505 is 505052552.

It is a happy number.

255250505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68873401 + 186377104 = 8299^2 + 13652^2 .

It is not a de Polignac number, because 255250505 - 2⁶ = 255250441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255250507) 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, 25525046 + ... + 25525055.

It is an arithmetic number, because the mean of its divisors is an integer number (76575153).

Almost surely, 2^255250505 is an apocalyptic number.

It is an amenable number.

255250505 is a deficient number, since it is larger than the sum of its proper divisors (51050107).

255250505 is an equidigital number, since it uses as much as digits as its factorization.

255250505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51050106.

The product of its (nonzero) digits is 12500, while the sum is 29.

The square root of 255250505 is about 15976.5611130806. The cubic root of 255250505 is about 634.3401540551.

The spelling of 255250505 in words is "two hundred fifty-five million, two hundred fifty thousand, five hundred five".