25090242123 has 4 divisors (see below), whose sum is σ = 33453656168. Its totient is φ = 16726828080.

The previous prime is 25090242097. The next prime is 25090242169. The reversal of 25090242123 is 32124209052.

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

It is not a de Polignac number, because 25090242123 - 2⁹ = 25090241611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25090242623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4181707018 + ... + 4181707023.

It is an arithmetic number, because the mean of its divisors is an integer number (8363414042).

Almost surely, 2^25090242123 is an apocalyptic number.

25090242123 is a deficient number, since it is larger than the sum of its proper divisors (8363414045).

25090242123 is an equidigital number, since it uses as much as digits as its factorization.

25090242123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8363414044.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 25090242123 in words is "twenty-five billion, ninety million, two hundred forty-two thousand, one hundred twenty-three".