25825993 has 2 divisors, whose sum is σ = 25825994. Its totient is φ = 25825992.

The previous prime is 25825991. The next prime is 25826039. The reversal of 25825993 is 39952852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22629049 + 3196944 = 4757^2 + 1788^2 .

It is a cyclic number.

It is not a de Polignac number, because 25825993 - 2¹ = 25825991 is a prime.

Together with 25825991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (25825991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12912996 + 12912997.

It is an arithmetic number, because the mean of its divisors is an integer number (12912997).

Almost surely, 2^25825993 is an apocalyptic number.

It is an amenable number.

25825993 is a deficient number, since it is larger than the sum of its proper divisors (1).

25825993 is an equidigital number, since it uses as much as digits as its factorization.

25825993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 43.

The square root of 25825993 is about 5081.9280789873. The cubic root of 25825993 is about 295.5872358855.

The spelling of 25825993 in words is "twenty-five million, eight hundred twenty-five thousand, nine hundred ninety-three".