25819093 has 2 divisors, whose sum is σ = 25819094. Its totient is φ = 25819092.

The previous prime is 25819033. The next prime is 25819099. The reversal of 25819093 is 39091852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 6265009 = 4422^2 + 2503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25819093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25819099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12909546 + 12909547.

It is an arithmetic number, because the mean of its divisors is an integer number (12909547).

Almost surely, 2^25819093 is an apocalyptic number.

It is an amenable number.

25819093 is a deficient number, since it is larger than the sum of its proper divisors (1).

25819093 is an equidigital number, since it uses as much as digits as its factorization.

25819093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 25819093 is about 5081.2491574415. The cubic root of 25819093 is about 295.5609092618.

The spelling of 25819093 in words is "twenty-five million, eight hundred nineteen thousand, ninety-three".