625144243453 has 2 divisors, whose sum is σ = 625144243454. Its totient is φ = 625144243452.

The previous prime is 625144243433. The next prime is 625144243463. The reversal of 625144243453 is 354342441526.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 619838140804 + 5306102649 = 787298^2 + 72843^2 .

It is a cyclic number.

It is not a de Polignac number, because 625144243453 - 2⁹ = 625144242941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625144243433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312572121726 + 312572121727.

It is an arithmetic number, because the mean of its divisors is an integer number (312572121727).

Almost surely, 2^625144243453 is an apocalyptic number.

It is an amenable number.

625144243453 is a deficient number, since it is larger than the sum of its proper divisors (1).

625144243453 is an equidigital number, since it uses as much as digits as its factorization.

625144243453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382400, while the sum is 43.

Adding to 625144243453 its reverse (354342441526), we get a palindrome (979486684979).

The spelling of 625144243453 in words is "six hundred twenty-five billion, one hundred forty-four million, two hundred forty-three thousand, four hundred fifty-three".