625534421463593 has 2 divisors, whose sum is σ = 625534421463594. Its totient is φ = 625534421463592.

The previous prime is 625534421463571. The next prime is 625534421463661. The reversal of 625534421463593 is 395364124435526.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 443637626167849 + 181896795295744 = 21062707^2 + 13486912^2 .

It is a cyclic number.

It is not a de Polignac number, because 625534421463593 - 2¹⁸ = 625534421201449 is a prime.

It is not a weakly prime, because it can be changed into another prime (625534421463563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312767210731796 + 312767210731797.

It is an arithmetic number, because the mean of its divisors is an integer number (312767210731797).

Almost surely, 2^{625534421463593} is an apocalyptic number.

It is an amenable number.

625534421463593 is a deficient number, since it is larger than the sum of its proper divisors (1).

625534421463593 is an equidigital number, since it uses as much as digits as its factorization.

625534421463593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936000, while the sum is 62.

The spelling of 625534421463593 in words is "six hundred twenty-five trillion, five hundred thirty-four billion, four hundred twenty-one million, four hundred sixty-three thousand, five hundred ninety-three".