225111491 has 32 divisors (see below), whose sum is σ = 263208960. Its totient is φ = 190634400.

The previous prime is 225111479. The next prime is 225111503. The reversal of 225111491 is 194111522.

It is an interprime number because it is at equal distance from previous prime (225111479) and next prime (225111503).

It is not a de Polignac number, because 225111491 - 2¹⁰ = 225110467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225111491.

It is not an unprimeable number, because it can be changed into a prime (225111401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1347890 + ... + 1348056.

It is an arithmetic number, because the mean of its divisors is an integer number (8225280).

Almost surely, 2^225111491 is an apocalyptic number.

225111491 is a deficient number, since it is larger than the sum of its proper divisors (38097469).

225111491 is a wasteful number, since it uses less digits than its factorization.

225111491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its digits is 720, while the sum is 26.

The square root of 225111491 is about 15003.7159064013. The cubic root of 225111491 is about 608.3206438253.

The spelling of 225111491 in words is "two hundred twenty-five million, one hundred eleven thousand, four hundred ninety-one".