25345032123 has 4 divisors (see below), whose sum is σ = 33793376168. Its totient is φ = 16896688080.

The previous prime is 25345032103. The next prime is 25345032151. The reversal of 25345032123 is 32123054352.

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

It is not a de Polignac number, because 25345032123 - 2⁹ = 25345031611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25345032103) 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, 4224172018 + ... + 4224172023.

It is an arithmetic number, because the mean of its divisors is an integer number (8448344042).

Almost surely, 2^25345032123 is an apocalyptic number.

25345032123 is a deficient number, since it is larger than the sum of its proper divisors (8448344045).

25345032123 is an equidigital number, since it uses as much as digits as its factorization.

25345032123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8448344044.

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 25345032123 its reverse (32123054352), we get a palindrome (57468086475).

The spelling of 25345032123 in words is "twenty-five billion, three hundred forty-five million, thirty-two thousand, one hundred twenty-three".