225121411 has 4 divisors (see below), whose sum is σ = 232383424. Its totient is φ = 217859400.

The previous prime is 225121409. The next prime is 225121423. The reversal of 225121411 is 114121522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114121522 = 2 ⋅57060761.

It is a cyclic number.

It is not a de Polignac number, because 225121411 - 2¹ = 225121409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225121441) 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, 3630960 + ... + 3631021.

It is an arithmetic number, because the mean of its divisors is an integer number (58095856).

Almost surely, 2^225121411 is an apocalyptic number.

225121411 is a deficient number, since it is larger than the sum of its proper divisors (7262013).

225121411 is an equidigital number, since it uses as much as digits as its factorization.

225121411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7262012.

The product of its digits is 160, while the sum is 19.

The square root of 225121411 is about 15004.0464875313. The cubic root of 225121411 is about 608.3295793267.

Adding to 225121411 its reverse (114121522), we get a palindrome (339242933).

The spelling of 225121411 in words is "two hundred twenty-five million, one hundred twenty-one thousand, four hundred eleven".