255720004 has 6 divisors (see below), whose sum is σ = 447510014. Its totient is φ = 127860000.

The previous prime is 255719977. The next prime is 255720013. The reversal of 255720004 is 400027552.

It can be written as a sum of positive squares in only one way, i.e., 141657604 + 114062400 = 11902^2 + 10680^2 .

It is an unprimeable number.

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, 31964997 + ... + 31965004.

Almost surely, 2^255720004 is an apocalyptic number.

It is an amenable number.

255720004 is a deficient number, since it is larger than the sum of its proper divisors (191790010).

255720004 is a wasteful number, since it uses less digits than its factorization.

255720004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63930005 (or 63930003 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 255720004 is about 15991.2477311810. The cubic root of 255720004 is about 634.7288436591.

Adding to 255720004 its reverse (400027552), we get a palindrome (655747556).

The spelling of 255720004 in words is "two hundred fifty-five million, seven hundred twenty thousand, four".