225681755 has 24 divisors (see below), whose sum is σ = 296214048. Its totient is φ = 164975616.

The previous prime is 225681751. The next prime is 225681779. The reversal of 225681755 is 557186522.

It is not a de Polignac number, because 225681755 - 2² = 225681751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225681751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85739 + ... + 88331.

It is an arithmetic number, because the mean of its divisors is an integer number (12342252).

Almost surely, 2^225681755 is an apocalyptic number.

225681755 is a deficient number, since it is larger than the sum of its proper divisors (70532293).

225681755 is a wasteful number, since it uses less digits than its factorization.

225681755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727 (or 2714 counting only the distinct ones).

The product of its digits is 168000, while the sum is 41.

The square root of 225681755 is about 15022.7079782574. The cubic root of 225681755 is about 608.8338870520.

The spelling of 225681755 in words is "two hundred twenty-five million, six hundred eighty-one thousand, seven hundred fifty-five".