255825506 has 4 divisors (see below), whose sum is σ = 383738262. Its totient is φ = 127912752.

The previous prime is 255825499. The next prime is 255825509. The reversal of 255825506 is 605528552.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 248850625 + 6974881 = 15775^2 + 2641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255825506.

It is not an unprimeable number, because it can be changed into a prime (255825509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63956375 + ... + 63956378.

Almost surely, 2^255825506 is an apocalyptic number.

255825506 is a deficient number, since it is larger than the sum of its proper divisors (127912756).

255825506 is a wasteful number, since it uses less digits than its factorization.

255825506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127912755.

The product of its (nonzero) digits is 120000, while the sum is 38.

The square root of 255825506 is about 15994.5461329792. The cubic root of 255825506 is about 634.8161213513.

The spelling of 255825506 in words is "two hundred fifty-five million, eight hundred twenty-five thousand, five hundred six".