225195813 has 12 divisors (see below), whose sum is σ = 327439008. Its totient is φ = 149135400.

The previous prime is 225195799. The next prime is 225195827. The reversal of 225195813 is 318591522.

225195813 is a `hidden beast` number, since 22 + 51 + 9 + 581 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (225195799) and next prime (225195827).

It is not a de Polignac number, because 225195813 - 2⁴ = 225195797 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225195863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81495 + ... + 84212.

It is an arithmetic number, because the mean of its divisors is an integer number (27286584).

Almost surely, 2^225195813 is an apocalyptic number.

It is an amenable number.

225195813 is a deficient number, since it is larger than the sum of its proper divisors (102243195).

225195813 is a wasteful number, since it uses less digits than its factorization.

225195813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165864 (or 165861 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 225195813 is about 15006.5256805165. The cubic root of 225195813 is about 608.3965890229.

The spelling of 225195813 in words is "two hundred twenty-five million, one hundred ninety-five thousand, eight hundred thirteen".