625896573217 has 2 divisors, whose sum is σ = 625896573218. Its totient is φ = 625896573216.

The previous prime is 625896573199. The next prime is 625896573283. The reversal of 625896573217 is 712375698526.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539878135696 + 86018437521 = 734764^2 + 293289^2 .

It is a cyclic number.

It is not a de Polignac number, because 625896573217 - 2¹¹ = 625896571169 is a prime.

It is not a weakly prime, because it can be changed into another prime (625896573287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312948286608 + 312948286609.

It is an arithmetic number, because the mean of its divisors is an integer number (312948286609).

Almost surely, 2^625896573217 is an apocalyptic number.

It is an amenable number.

625896573217 is a deficient number, since it is larger than the sum of its proper divisors (1).

625896573217 is an equidigital number, since it uses as much as digits as its factorization.

625896573217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38102400, while the sum is 61.

The spelling of 625896573217 in words is "six hundred twenty-five billion, eight hundred ninety-six million, five hundred seventy-three thousand, two hundred seventeen".