225516145 has 8 divisors (see below), whose sum is σ = 271328256. Its totient is φ = 179940336.

The previous prime is 225516143. The next prime is 225516163. The reversal of 225516145 is 541615522.

225516145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 225516145 - 2¹ = 225516143 is a prime.

It is a super-2 number, since 2×225516145² = 101715063311322050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225516143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56967 + ... + 60796.

It is an arithmetic number, because the mean of its divisors is an integer number (33916032).

Almost surely, 2^225516145 is an apocalyptic number.

It is an amenable number.

225516145 is a deficient number, since it is larger than the sum of its proper divisors (45812111).

225516145 is a wasteful number, since it uses less digits than its factorization.

225516145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118151.

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

The square root of 225516145 is about 15017.1949777580. The cubic root of 225516145 is about 608.6849255885.

The spelling of 225516145 in words is "two hundred twenty-five million, five hundred sixteen thousand, one hundred forty-five".