25696993 has 4 divisors (see below), whose sum is σ = 29368000. Its totient is φ = 22025988.

The previous prime is 25696969. The next prime is 25696999. The reversal of 25696993 is 39969652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25696993 - 2⁵ = 25696961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25696999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835493 + ... + 1835506.

It is an arithmetic number, because the mean of its divisors is an integer number (7342000).

Almost surely, 2^25696993 is an apocalyptic number.

It is an amenable number.

25696993 is a deficient number, since it is larger than the sum of its proper divisors (3671007).

25696993 is an equidigital number, since it uses as much as digits as its factorization.

25696993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671006.

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

The square root of 25696993 is about 5069.2201569867. The cubic root of 25696993 is about 295.0942646183.

The spelling of 25696993 in words is "twenty-five million, six hundred ninety-six thousand, nine hundred ninety-three".