225445151 has 4 divisors (see below), whose sum is σ = 228810072. Its totient is φ = 222080232.

The previous prime is 225445147. The next prime is 225445163. The reversal of 225445151 is 151544522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151544522 = 2 ⋅75772261.

It is a cyclic number.

It is not a de Polignac number, because 225445151 - 2² = 225445147 is a prime.

It is a super-3 number, since 3×225445151³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225445111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1682360 + ... + 1682493.

It is an arithmetic number, because the mean of its divisors is an integer number (57202518).

Almost surely, 2^225445151 is an apocalyptic number.

225445151 is a deficient number, since it is larger than the sum of its proper divisors (3364921).

225445151 is an equidigital number, since it uses as much as digits as its factorization.

225445151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3364920.

The product of its digits is 8000, while the sum is 29.

The square root of 225445151 is about 15014.8310346803. The cubic root of 225445151 is about 608.6210461813.

Adding to 225445151 its reverse (151544522), we get a palindrome (376989673).

The spelling of 225445151 in words is "two hundred twenty-five million, four hundred forty-five thousand, one hundred fifty-one".