25071787441 has 2 divisors, whose sum is σ = 25071787442. Its totient is φ = 25071787440.

The previous prime is 25071787427. The next prime is 25071787511. The reversal of 25071787441 is 14478717052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24679153216 + 392634225 = 157096^2 + 19815^2 .

It is a cyclic number.

It is not a de Polignac number, because 25071787441 - 2¹⁷ = 25071656369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25071787391 and 25071787400.

It is not a weakly prime, because it can be changed into another prime (25071787841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12535893720 + 12535893721.

It is an arithmetic number, because the mean of its divisors is an integer number (12535893721).

Almost surely, 2^25071787441 is an apocalyptic number.

It is an amenable number.

25071787441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25071787441 is an equidigital number, since it uses as much as digits as its factorization.

25071787441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 439040, while the sum is 46.

The spelling of 25071787441 in words is "twenty-five billion, seventy-one million, seven hundred eighty-seven thousand, four hundred forty-one".