625875484866865 has 4 divisors (see below), whose sum is σ = 751050581840244. Its totient is φ = 500700387893488.

The previous prime is 625875484866833. The next prime is 625875484866991. The reversal of 625875484866865 is 568668484578526.

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 217717225499536 + 408158259367329 = 14755244^2 + 20202927^2 .

It is a cyclic number.

It is not a de Polignac number, because 625875484866865 - 2⁵ = 625875484866833 is a prime.

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, 62587548486682 + ... + 62587548486691.

It is an arithmetic number, because the mean of its divisors is an integer number (187762645460061).

Almost surely, 2^{625875484866865} is an apocalyptic number.

It is an amenable number.

625875484866865 is a deficient number, since it is larger than the sum of its proper divisors (125175096973379).

625875484866865 is a wasteful number, since it uses less digits than its factorization.

625875484866865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125175096973378.

The product of its digits is 148635648000, while the sum is 88.

The spelling of 625875484866865 in words is "six hundred twenty-five trillion, eight hundred seventy-five billion, four hundred eighty-four million, eight hundred sixty-six thousand, eight hundred sixty-five".