25558423 has 8 divisors (see below), whose sum is σ = 28298880. Its totient is φ = 22887480.

The previous prime is 25558409. The next prime is 25558447. The reversal of 25558423 is 32485552.

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

It is not a de Polignac number, because 25558423 - 2⁵ = 25558391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25558223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16603 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (3537360).

Almost surely, 2^25558423 is an apocalyptic number.

25558423 is a deficient number, since it is larger than the sum of its proper divisors (2740457).

25558423 is a wasteful number, since it uses less digits than its factorization.

25558423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34757.

The product of its digits is 48000, while the sum is 34.

The square root of 25558423 is about 5055.5338986105. The cubic root of 25558423 is about 294.5628803347.

The spelling of 25558423 in words is "twenty-five million, five hundred fifty-eight thousand, four hundred twenty-three".