25041332497 has 2 divisors, whose sum is σ = 25041332498. Its totient is φ = 25041332496.

The previous prime is 25041332479. The next prime is 25041332557. The reversal of 25041332497 is 79423314052.

Together with previous prime (25041332479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23335312081 + 1706020416 = 152759^2 + 41304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25041332497 is a prime.

It is not a weakly prime, because it can be changed into another prime (25041332447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12520666248 + 12520666249.

It is an arithmetic number, because the mean of its divisors is an integer number (12520666249).

Almost surely, 2^25041332497 is an apocalyptic number.

It is an amenable number.

25041332497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25041332497 is an equidigital number, since it uses as much as digits as its factorization.

25041332497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 25041332497 in words is "twenty-five billion, forty-one million, three hundred thirty-two thousand, four hundred ninety-seven".