25966993 has 8 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 23833488.

The previous prime is 25966987. The next prime is 25967003. The reversal of 25966993 is 39966952.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25966993 - 2⁹ = 25966481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25966093) 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 7 ways as a sum of consecutive naturals, for example, 3253 + ... + 7906.

It is an arithmetic number, because the mean of its divisors is an integer number (3515400).

Almost surely, 2^25966993 is an apocalyptic number.

It is an amenable number.

25966993 is a deficient number, since it is larger than the sum of its proper divisors (2156207).

25966993 is a wasteful number, since it uses less digits than its factorization.

25966993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its digits is 787320, while the sum is 49.

The square root of 25966993 is about 5095.7818830872. The cubic root of 25966993 is about 296.1241907952.

The spelling of 25966993 in words is "twenty-five million, nine hundred sixty-six thousand, nine hundred ninety-three".