225485549 has 2 divisors, whose sum is σ = 225485550. Its totient is φ = 225485548.

The previous prime is 225485543. The next prime is 225485573. The reversal of 225485549 is 945584522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192709924 + 32775625 = 13882^2 + 5725^2 .

It is a cyclic number.

It is not a de Polignac number, because 225485549 - 2²⁰ = 224436973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225485543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112742774 + 112742775.

It is an arithmetic number, because the mean of its divisors is an integer number (112742775).

Almost surely, 2^225485549 is an apocalyptic number.

It is an amenable number.

225485549 is a deficient number, since it is larger than the sum of its proper divisors (1).

225485549 is an equidigital number, since it uses as much as digits as its factorization.

225485549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576000, while the sum is 44.

The square root of 225485549 is about 15016.1762443040. The cubic root of 225485549 is about 608.6573973802.

The spelling of 225485549 in words is "two hundred twenty-five million, four hundred eighty-five thousand, five hundred forty-nine".