23425435405 has 4 divisors (see below), whose sum is σ = 28110522492. Its totient is φ = 18740348320.

The previous prime is 23425435399. The next prime is 23425435427. The reversal of 23425435405 is 50453452432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14537848329 + 8887587076 = 120573^2 + 94274^2 .

It is not a de Polignac number, because 23425435405 - 2⁵ = 23425435373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342543536 + ... + 2342543545.

It is an arithmetic number, because the mean of its divisors is an integer number (7027630623).

Almost surely, 2^23425435405 is an apocalyptic number.

It is an amenable number.

23425435405 is a deficient number, since it is larger than the sum of its proper divisors (4685087087).

23425435405 is an equidigital number, since it uses as much as digits as its factorization.

23425435405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4685087086.

The product of its (nonzero) digits is 288000, while the sum is 37.

Adding to 23425435405 its reverse (50453452432), we get a palindrome (73878887837).

The spelling of 23425435405 in words is "twenty-three billion, four hundred twenty-five million, four hundred thirty-five thousand, four hundred five".