225146311 has 4 divisors (see below), whose sum is σ = 242465272. Its totient is φ = 207827352.

The previous prime is 225146291. The next prime is 225146329. The reversal of 225146311 is 113641522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113641522 = 2 ⋅56820761.

It is a cyclic number.

It is not a de Polignac number, because 225146311 - 2⁹ = 225145799 is a prime.

It is a super-2 number, since 2×225146311² = 101381722713817442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225146611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8659461 + ... + 8659486.

It is an arithmetic number, because the mean of its divisors is an integer number (60616318).

Almost surely, 2^225146311 is an apocalyptic number.

225146311 is a deficient number, since it is larger than the sum of its proper divisors (17318961).

225146311 is a wasteful number, since it uses less digits than its factorization.

225146311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17318960.

The product of its digits is 1440, while the sum is 25.

The square root of 225146311 is about 15004.8762407425. The cubic root of 225146311 is about 608.3520069996.

Adding to 225146311 its reverse (113641522), we get a palindrome (338787833).

The spelling of 225146311 in words is "two hundred twenty-five million, one hundred forty-six thousand, three hundred eleven".