25300091 has 2 divisors, whose sum is σ = 25300092. Its totient is φ = 25300090.

The previous prime is 25300081. The next prime is 25300109. The reversal of 25300091 is 19000352.

Together with next prime (25300109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25300091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25300021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12650045 + 12650046.

It is an arithmetic number, because the mean of its divisors is an integer number (12650046).

Almost surely, 2^25300091 is an apocalyptic number.

25300091 is a deficient number, since it is larger than the sum of its proper divisors (1).

25300091 is an equidigital number, since it uses as much as digits as its factorization.

25300091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 25300091 is about 5029.9195818621. The cubic root of 25300091 is about 293.5670854006.

The spelling of 25300091 in words is "twenty-five million, three hundred thousand, ninety-one".