255428005587 has 8 divisors (see below), whose sum is σ = 340587505104. Its totient is φ = 170276921568.

The previous prime is 255428005561. The next prime is 255428005667. The reversal of 255428005587 is 785500824552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 255428005587 - 2³¹ = 253280521939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255428005537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2032708 + ... + 2154705.

It is an arithmetic number, because the mean of its divisors is an integer number (42573438138).

Almost surely, 2^255428005587 is an apocalyptic number.

255428005587 is a deficient number, since it is larger than the sum of its proper divisors (85159499517).

255428005587 is a wasteful number, since it uses less digits than its factorization.

255428005587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207749.

The product of its (nonzero) digits is 4480000, while the sum is 51.

The spelling of 255428005587 in words is "two hundred fifty-five billion, four hundred twenty-eight million, five thousand, five hundred eighty-seven".