225125155 has 4 divisors (see below), whose sum is σ = 270150192. Its totient is φ = 180100120.

The previous prime is 225125123. The next prime is 225125171. The reversal of 225125155 is 551521522.

225125155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 225125155 - 2⁵ = 225125123 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22512511 + ... + 22512520.

It is an arithmetic number, because the mean of its divisors is an integer number (67537548).

Almost surely, 2^225125155 is an apocalyptic number.

225125155 is a deficient number, since it is larger than the sum of its proper divisors (45025037).

225125155 is an equidigital number, since it uses as much as digits as its factorization.

225125155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45025036.

The product of its digits is 5000, while the sum is 28.

The square root of 225125155 is about 15004.1712533548. The cubic root of 225125155 is about 608.3329516897.

Adding to 225125155 its reverse (551521522), we get a palindrome (776646677).

The spelling of 225125155 in words is "two hundred twenty-five million, one hundred twenty-five thousand, one hundred fifty-five".