545221051225 has 6 divisors (see below), whose sum is σ = 676074103550. Its totient is φ = 436176840960.

The previous prime is 545221051213. The next prime is 545221051229. The reversal of 545221051225 is 522150122545.

It can be written as a sum of positive squares in 3 ways, for example, as 147124410624 + 398096640601 = 383568^2 + 630949^2 .

It is not a de Polignac number, because 545221051225 - 2³³ = 536631116633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (545221051229) 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, 10904421000 + ... + 10904421049.

Almost surely, 2^545221051225 is an apocalyptic number.

It is an amenable number.

545221051225 is a deficient number, since it is larger than the sum of its proper divisors (130853052325).

545221051225 is a wasteful number, since it uses less digits than its factorization.

545221051225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21808842059 (or 21808842054 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 545221051225 in words is "five hundred forty-five billion, two hundred twenty-one million, fifty-one thousand, two hundred twenty-five".