225961011 has 12 divisors (see below), whose sum is σ = 337643280. Its totient is φ = 145446000.

The previous prime is 225961003. The next prime is 225961027. The reversal of 225961011 is 110169522.

It is not a de Polignac number, because 225961011 - 2³ = 225961003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225961031) 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 11 ways as a sum of consecutive naturals, for example, 432615 + ... + 433136.

It is an arithmetic number, because the mean of its divisors is an integer number (28136940).

Almost surely, 2^225961011 is an apocalyptic number.

225961011 is a deficient number, since it is larger than the sum of its proper divisors (111682269).

225961011 is a wasteful number, since it uses less digits than its factorization.

225961011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865786 (or 865783 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 225961011 is about 15031.9995675891. Note that the first 3 decimals coincide. The cubic root of 225961011 is about 609.0849048876.

The spelling of 225961011 in words is "two hundred twenty-five million, nine hundred sixty-one thousand, eleven".