1425619668305 has 24 divisors (see below), whose sum is σ = 1993404782952. Its totient is φ = 975919160832.

The previous prime is 1425619668287. The next prime is 1425619668329. The reversal of 1425619668305 is 5038669165241.

It can be written as a sum of positive squares in 4 ways, for example, as 1712056129 + 1423907612176 = 41377^2 + 1193276^2 .

It is not a de Polignac number, because 1425619668305 - 2¹⁰ = 1425619667281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4761002 + ... + 5051571.

It is an arithmetic number, because the mean of its divisors is an integer number (83058532623).

Almost surely, 2^{1425619668305} is an apocalyptic number.

It is an amenable number.

1425619668305 is a deficient number, since it is larger than the sum of its proper divisors (567785114647).

1425619668305 is an equidigital number, since it uses as much as digits as its factorization.

1425619668305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9813185 (or 9813178 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 1425619668305 in words is "one trillion, four hundred twenty-five billion, six hundred nineteen million, six hundred sixty-eight thousand, three hundred five".