25758993 has 16 divisors (see below), whose sum is σ = 37989056. Its totient is φ = 15422400.

The previous prime is 25758979. The next prime is 25759039. The reversal of 25758993 is 39985752.

It is a happy number.

It is not a de Polignac number, because 25758993 - 2¹⁴ = 25742609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25758973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7483 + ... + 10368.

It is an arithmetic number, because the mean of its divisors is an integer number (2374316).

Almost surely, 2^25758993 is an apocalyptic number.

It is an amenable number.

25758993 is a deficient number, since it is larger than the sum of its proper divisors (12230063).

25758993 is a wasteful number, since it uses less digits than its factorization.

25758993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17904.

The product of its digits is 680400, while the sum is 48.

The square root of 25758993 is about 5075.3318118129. The cubic root of 25758993 is about 295.3314019591.

The spelling of 25758993 in words is "twenty-five million, seven hundred fifty-eight thousand, nine hundred ninety-three".