225422389 has 8 divisors (see below), whose sum is σ = 235312568. Its totient is φ = 215732160.

The previous prime is 225422381. The next prime is 225422399. The reversal of 225422389 is 983224522.

It can be written as a sum of positive squares in 4 ways, for example, as 44116164 + 181306225 = 6642^2 + 13465^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225422389 - 2³ = 225422381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225422381) 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 7 ways as a sum of consecutive naturals, for example, 47682 + ... + 52195.

It is an arithmetic number, because the mean of its divisors is an integer number (29414071).

Almost surely, 2^225422389 is an apocalyptic number.

It is an amenable number.

225422389 is a deficient number, since it is larger than the sum of its proper divisors (9890179).

225422389 is an equidigital number, since it uses as much as digits as its factorization.

225422389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99975.

The product of its digits is 69120, while the sum is 37.

The square root of 225422389 is about 15014.0730316593. The cubic root of 225422389 is about 608.6005624133.

The spelling of 225422389 in words is "two hundred twenty-five million, four hundred twenty-two thousand, three hundred eighty-nine".