23425406306405 has 16 divisors (see below), whose sum is σ = 28458219769200. Its totient is φ = 18509410905600.

The previous prime is 23425406306371. The next prime is 23425406306411. The reversal of 23425406306405 is 50460360452432.

It can be written as a sum of positive squares in 8 ways, for example, as 12003182922721 + 11422223383684 = 3464561^2 + 3379678^2 .

It is not a de Polignac number, because 23425406306405 - 2¹⁰ = 23425406305381 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56501210 + ... + 56914299.

It is an arithmetic number, because the mean of its divisors is an integer number (1778638735575).

Almost surely, 2^{23425406306405} is an apocalyptic number.

It is an amenable number.

23425406306405 is a deficient number, since it is larger than the sum of its proper divisors (5032813462795).

23425406306405 is a wasteful number, since it uses less digits than its factorization.

23425406306405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113416024.

The product of its (nonzero) digits is 2073600, while the sum is 44.

Adding to 23425406306405 its reverse (50460360452432), we get a palindrome (73885766758837).

The spelling of 23425406306405 in words is "twenty-three trillion, four hundred twenty-five billion, four hundred six million, three hundred six thousand, four hundred five".