25793993 has 4 divisors (see below), whose sum is σ = 26104848. Its totient is φ = 25483140.

The previous prime is 25793983. The next prime is 25794007. The reversal of 25793993 is 39939752.

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 25793993 - 2¹⁶ = 25728457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25793903) 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, 155303 + ... + 155468.

It is an arithmetic number, because the mean of its divisors is an integer number (6526212).

Almost surely, 2^25793993 is an apocalyptic number.

It is an amenable number.

25793993 is a deficient number, since it is larger than the sum of its proper divisors (310855).

25793993 is an equidigital number, since it uses as much as digits as its factorization.

25793993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310854.

The product of its digits is 459270, while the sum is 47.

The square root of 25793993 is about 5078.7786917723. The cubic root of 25793993 is about 295.4651018154.

The spelling of 25793993 in words is "twenty-five million, seven hundred ninety-three thousand, nine hundred ninety-three".