25458993 has 24 divisors (see below), whose sum is σ = 44241600. Its totient is φ = 13781664.

The previous prime is 25458977. The next prime is 25459003. The reversal of 25458993 is 39985452.

It is not a de Polignac number, because 25458993 - 2⁴ = 25458977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25458943) 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 in 23 ways as a sum of consecutive naturals, for example, 9438 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (1843400).

Almost surely, 2^25458993 is an apocalyptic number.

It is an amenable number.

25458993 is a deficient number, since it is larger than the sum of its proper divisors (18782607).

25458993 is a wasteful number, since it uses less digits than its factorization.

25458993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21301 (or 21298 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 25458993 is about 5045.6905374785. The cubic root of 25458993 is about 294.1804043408.

The spelling of 25458993 in words is "twenty-five million, four hundred fifty-eight thousand, nine hundred ninety-three".