25583450573 has 2 divisors, whose sum is σ = 25583450574. Its totient is φ = 25583450572.

The previous prime is 25583450567. The next prime is 25583450621. The reversal of 25583450573 is 37505438552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17455165924 + 8128284649 = 132118^2 + 90157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25583450573 is a prime.

It is a super-2 number, since 2×25583450573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25589450573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12791725286 + 12791725287.

It is an arithmetic number, because the mean of its divisors is an integer number (12791725287).

Almost surely, 2^25583450573 is an apocalyptic number.

It is an amenable number.

25583450573 is a deficient number, since it is larger than the sum of its proper divisors (1).

25583450573 is an equidigital number, since it uses as much as digits as its factorization.

25583450573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520000, while the sum is 47.

The spelling of 25583450573 in words is "twenty-five billion, five hundred eighty-three million, four hundred fifty thousand, five hundred seventy-three".