25440333073 has 2 divisors, whose sum is σ = 25440333074. Its totient is φ = 25440333072.

The previous prime is 25440333047. The next prime is 25440333103. The reversal of 25440333073 is 37033304452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21401349264 + 4038983809 = 146292^2 + 63553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25440333073 is a prime.

It is not a weakly prime, because it can be changed into another prime (25440333173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12720166536 + 12720166537.

It is an arithmetic number, because the mean of its divisors is an integer number (12720166537).

Almost surely, 2^25440333073 is an apocalyptic number.

It is an amenable number.

25440333073 is a deficient number, since it is larger than the sum of its proper divisors (1).

25440333073 is an equidigital number, since it uses as much as digits as its factorization.

25440333073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 34.

The spelling of 25440333073 in words is "twenty-five billion, four hundred forty million, three hundred thirty-three thousand, seventy-three".