255478025 has 12 divisors (see below), whose sum is σ = 345592464. Its totient is φ = 185802000.

The previous prime is 255477973. The next prime is 255478031. The reversal of 255478025 is 520874552.

It is not a de Polignac number, because 255478025 - 2⁶ = 255477961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255478025.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 464231 + ... + 464780.

It is an arithmetic number, because the mean of its divisors is an integer number (28799372).

Almost surely, 2^255478025 is an apocalyptic number.

255478025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

255478025 is a deficient number, since it is larger than the sum of its proper divisors (90114439).

255478025 is a wasteful number, since it uses less digits than its factorization.

255478025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929032 (or 929027 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 255478025 is about 15983.6799580072. The cubic root of 255478025 is about 634.5285731551.

The spelling of 255478025 in words is "two hundred fifty-five million, four hundred seventy-eight thousand, twenty-five".