255774728894 has 4 divisors (see below), whose sum is σ = 383662093344. Its totient is φ = 127887364446.

The previous prime is 255774728843. The next prime is 255774728899. The reversal of 255774728894 is 498827477552.

It is a happy number.

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 (255774728899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63943682222 + ... + 63943682225.

It is an arithmetic number, because the mean of its divisors is an integer number (95915523336).

Almost surely, 2^255774728894 is an apocalyptic number.

255774728894 is a deficient number, since it is larger than the sum of its proper divisors (127887364450).

255774728894 is a wasteful number, since it uses less digits than its factorization.

255774728894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127887364449.

The product of its digits is 316108800, while the sum is 68.

The spelling of 255774728894 in words is "two hundred fifty-five billion, seven hundred seventy-four million, seven hundred twenty-eight thousand, eight hundred ninety-four".