72425321993 has 2 divisors, whose sum is σ = 72425321994. Its totient is φ = 72425321992.

The previous prime is 72425321981. The next prime is 72425321999. The reversal of 72425321993 is 39912352427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62967370489 + 9457951504 = 250933^2 + 97252^2 .

It is a cyclic number.

It is not a de Polignac number, because 72425321993 - 2¹⁴ = 72425305609 is a prime.

It is not a weakly prime, because it can be changed into another prime (72425321999) 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, 36212660996 + 36212660997.

It is an arithmetic number, because the mean of its divisors is an integer number (36212660997).

Almost surely, 2^72425321993 is an apocalyptic number.

It is an amenable number.

72425321993 is a deficient number, since it is larger than the sum of its proper divisors (1).

72425321993 is an equidigital number, since it uses as much as digits as its factorization.

72425321993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

It can be divided in two parts, 7242 and 5321993, that added together give a palindrome (5329235).

The spelling of 72425321993 in words is "seventy-two billion, four hundred twenty-five million, three hundred twenty-one thousand, nine hundred ninety-three".