225138611 has 4 divisors (see below), whose sum is σ = 225295224. Its totient is φ = 224982000.

The previous prime is 225138607. The next prime is 225138623. The reversal of 225138611 is 116831522.

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

It is a cyclic number.

It is not a de Polignac number, because 225138611 - 2² = 225138607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225138671) 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, 76130 + ... + 79031.

It is an arithmetic number, because the mean of its divisors is an integer number (56323806).

Almost surely, 2^225138611 is an apocalyptic number.

225138611 is a deficient number, since it is larger than the sum of its proper divisors (156613).

225138611 is a wasteful number, since it uses less digits than its factorization.

225138611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156612.

The product of its digits is 2880, while the sum is 29.

The square root of 225138611 is about 15004.6196552928. The cubic root of 225138611 is about 608.3450717111.

The spelling of 225138611 in words is "two hundred twenty-five million, one hundred thirty-eight thousand, six hundred eleven".