255249555 has 16 divisors (see below), whose sum is σ = 445526784. Its totient is φ = 123757280.

The previous prime is 255249541. The next prime is 255249557. The reversal of 255249555 is 555942552.

It is a happy number.

It is not a de Polignac number, because 255249555 - 2⁷ = 255249427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255249557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773319 + ... + 773648.

It is an arithmetic number, because the mean of its divisors is an integer number (27845424).

Almost surely, 2^255249555 is an apocalyptic number.

255249555 is a deficient number, since it is larger than the sum of its proper divisors (190277229).

255249555 is a wasteful number, since it uses less digits than its factorization.

255249555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546986.

The product of its digits is 450000, while the sum is 42.

The square root of 255249555 is about 15976.5313819990. The cubic root of 255249555 is about 634.3393670846.

The spelling of 255249555 in words is "two hundred fifty-five million, two hundred forty-nine thousand, five hundred fifty-five".