255498835909 has 8 divisors (see below), whose sum is σ = 260327985912. Its totient is φ = 250669997760.

The previous prime is 255498835901. The next prime is 255498835939. The reversal of 255498835909 is 909538894552.

It can be written as a sum of positive squares in 4 ways, for example, as 18183713409 + 237315122500 = 134847^2 + 487150^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 255498835909 - 2³ = 255498835901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255498835901) 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, 2197579 + ... + 2310919.

It is an arithmetic number, because the mean of its divisors is an integer number (32540998239).

Almost surely, 2^255498835909 is an apocalyptic number.

It is an amenable number.

255498835909 is a deficient number, since it is larger than the sum of its proper divisors (4829150003).

255498835909 is a wasteful number, since it uses less digits than its factorization.

255498835909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155927.

The product of its (nonzero) digits is 139968000, while the sum is 67.

The spelling of 255498835909 in words is "two hundred fifty-five billion, four hundred ninety-eight million, eight hundred thirty-five thousand, nine hundred nine".