25591323 has 4 divisors (see below), whose sum is σ = 34121768. Its totient is φ = 17060880.

The previous prime is 25591303. The next prime is 25591333. The reversal of 25591323 is 32319552.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-25591323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25591303) 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, 4265218 + ... + 4265223.

It is an arithmetic number, because the mean of its divisors is an integer number (8530442).

Almost surely, 2^25591323 is an apocalyptic number.

25591323 is a deficient number, since it is larger than the sum of its proper divisors (8530445).

25591323 is an equidigital number, since it uses as much as digits as its factorization.

25591323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8530444.

The product of its digits is 8100, while the sum is 30.

The square root of 25591323 is about 5058.7867122463. The cubic root of 25591323 is about 294.6892178562.

The spelling of 25591323 in words is "twenty-five million, five hundred ninety-one thousand, three hundred twenty-three".