25439123 has 8 divisors (see below), whose sum is σ = 27214992. Its totient is φ = 23694336.

The previous prime is 25439111. The next prime is 25439149. The reversal of 25439123 is 32193452.

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 25439123 - 2⁶ = 25439059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25439023) 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, 6065 + ... + 9362.

It is an arithmetic number, because the mean of its divisors is an integer number (3401874).

Almost surely, 2^25439123 is an apocalyptic number.

25439123 is a deficient number, since it is larger than the sum of its proper divisors (1775869).

25439123 is a wasteful number, since it uses less digits than its factorization.

25439123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15541.

The product of its digits is 6480, while the sum is 29.

The square root of 25439123 is about 5043.7211461380. The cubic root of 25439123 is about 294.1038513521.

The spelling of 25439123 in words is "twenty-five million, four hundred thirty-nine thousand, one hundred twenty-three".