225116545 has 8 divisors (see below), whose sum is σ = 270253224. Its totient is φ = 180017664.

The previous prime is 225116543. The next prime is 225116587. The reversal of 225116545 is 545611522.

It can be written as a sum of positive squares in 4 ways, for example, as 48944016 + 176172529 = 6996^2 + 13273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225116545 - 2¹ = 225116543 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225116543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5937 + ... + 22033.

It is an arithmetic number, because the mean of its divisors is an integer number (33781653).

Almost surely, 2^225116545 is an apocalyptic number.

It is an amenable number.

225116545 is a deficient number, since it is larger than the sum of its proper divisors (45136679).

225116545 is a wasteful number, since it uses less digits than its factorization.

225116545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18899.

The product of its digits is 12000, while the sum is 31.

The square root of 225116545 is about 15003.8843303992. The cubic root of 225116545 is about 608.3251962799.

The spelling of 225116545 in words is "two hundred twenty-five million, one hundred sixteen thousand, five hundred forty-five".