545213144225 has 12 divisors (see below), whose sum is σ = 715832787564. Its totient is φ = 410513425920.

The previous prime is 545213144213. The next prime is 545213144227. The reversal of 545213144225 is 522441312545.

It can be written as a sum of positive squares in 6 ways, for example, as 33438876769 + 511774267456 = 182863^2 + 715384^2 .

It is not a de Polignac number, because 545213144225 - 2²² = 545208949921 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545213144227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 641426804 + ... + 641427653.

It is an arithmetic number, because the mean of its divisors is an integer number (59652732297).

Almost surely, 2^545213144225 is an apocalyptic number.

It is an amenable number.

545213144225 is a deficient number, since it is larger than the sum of its proper divisors (170619643339).

545213144225 is a wasteful number, since it uses less digits than its factorization.

545213144225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282854484 (or 1282854479 counting only the distinct ones).

The product of its digits is 192000, while the sum is 38.

The spelling of 545213144225 in words is "five hundred forty-five billion, two hundred thirteen million, one hundred forty-four thousand, two hundred twenty-five".