255818494 has 4 divisors (see below), whose sum is σ = 383727744. Its totient is φ = 127909246.

The previous prime is 255818491. The next prime is 255818539. The reversal of 255818494 is 494818552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255818491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63954622 + ... + 63954625.

It is an arithmetic number, because the mean of its divisors is an integer number (95931936).

Almost surely, 2^255818494 is an apocalyptic number.

255818494 is a deficient number, since it is larger than the sum of its proper divisors (127909250).

255818494 is a wasteful number, since it uses less digits than its factorization.

255818494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127909249.

The product of its digits is 460800, while the sum is 46.

The square root of 255818494 is about 15994.3269317593. The cubic root of 255818494 is about 634.8103213415.

The spelling of 255818494 in words is "two hundred fifty-five million, eight hundred eighteen thousand, four hundred ninety-four".