225259861 has 16 divisors (see below), whose sum is σ = 241532928. Its totient is φ = 209585200.

The previous prime is 225259819. The next prime is 225259873. The reversal of 225259861 is 168952522.

It is a de Polignac number, because none of the positive numbers 2^k-225259861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225259891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205926 + ... + 207016.

It is an arithmetic number, because the mean of its divisors is an integer number (15095808).

Almost surely, 2^225259861 is an apocalyptic number.

It is an amenable number.

225259861 is a deficient number, since it is larger than the sum of its proper divisors (16273067).

225259861 is a wasteful number, since it uses less digits than its factorization.

225259861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352.

The product of its digits is 86400, while the sum is 40.

The square root of 225259861 is about 15008.6595337492. The cubic root of 225259861 is about 608.4542616333.

The spelling of 225259861 in words is "two hundred twenty-five million, two hundred fifty-nine thousand, eight hundred sixty-one".