545920225 has 6 divisors (see below), whose sum is σ = 676941110. Its totient is φ = 436736160.

The previous prime is 545920223. The next prime is 545920253. The reversal of 545920225 is 522029545.

It can be written as a sum of positive squares in 3 ways, for example, as 80353296 + 465566929 = 8964^2 + 21577^2 .

It is not a de Polignac number, because 545920225 - 2¹ = 545920223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545920223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10918380 + ... + 10918429.

Almost surely, 2^545920225 is an apocalyptic number.

It is an amenable number.

545920225 is a deficient number, since it is larger than the sum of its proper divisors (131020885).

545920225 is a wasteful number, since it uses less digits than its factorization.

545920225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21836819 (or 21836814 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 545920225 is about 23364.9358013242. The cubic root of 545920225 is about 817.2903944411.

The spelling of 545920225 in words is "five hundred forty-five million, nine hundred twenty thousand, two hundred twenty-five".