5255797865 has 4 divisors (see below), whose sum is σ = 6306957444. Its totient is φ = 4204638288.

The previous prime is 5255797853. The next prime is 5255797891. The reversal of 5255797865 is 5687975525.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3315571561 + 1940226304 = 57581^2 + 44048^2 .

It is a cyclic number.

It is not a de Polignac number, because 5255797865 - 2⁶ = 5255797801 is a prime.

It is a super-2 number, since 2×5255797865² = 55246822395477116450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 525579782 + ... + 525579791.

It is an arithmetic number, because the mean of its divisors is an integer number (1576739361).

Almost surely, 2^5255797865 is an apocalyptic number.

It is an amenable number.

5255797865 is a deficient number, since it is larger than the sum of its proper divisors (1051159579).

5255797865 is a wasteful number, since it uses less digits than its factorization.

5255797865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051159578.

The product of its digits is 26460000, while the sum is 59.

The square root of 5255797865 is about 72496.8817605282. The cubic root of 5255797865 is about 1738.6528817729.

The spelling of 5255797865 in words is "five billion, two hundred fifty-five million, seven hundred ninety-seven thousand, eight hundred sixty-five".