16400175540425 has 6 divisors (see below), whose sum is σ = 20336217670158. Its totient is φ = 13120140432320.

The previous prime is 16400175540379. The next prime is 16400175540443. The reversal of 16400175540425 is 52404557100461.

It can be written as a sum of positive squares in 3 ways, for example, as 2592322184761 + 13807853355664 = 1610069^2 + 3715892^2 .

It is not a de Polignac number, because 16400175540425 - 2⁸ = 16400175540169 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 328003510784 + ... + 328003510833.

It is an arithmetic number, because the mean of its divisors is an integer number (3389369611693).

Almost surely, 2^{16400175540425} is an apocalyptic number.

It is an amenable number.

16400175540425 is a deficient number, since it is larger than the sum of its proper divisors (3936042129733).

16400175540425 is an equidigital number, since it uses as much as digits as its factorization.

16400175540425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656007021627 (or 656007021622 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 16400175540425 in words is "sixteen trillion, four hundred billion, one hundred seventy-five million, five hundred forty thousand, four hundred twenty-five".