225391389 has 12 divisors (see below), whose sum is σ = 319240704. Its totient is φ = 141421504.

The previous prime is 225391381. The next prime is 225391403. The reversal of 225391389 is 983193522.

It is not a de Polignac number, because 225391389 - 2³ = 225391381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225391389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225391381) 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, 129117 + ... + 130850.

It is an arithmetic number, because the mean of its divisors is an integer number (26603392).

Almost surely, 2^225391389 is an apocalyptic number.

It is an amenable number.

225391389 is a deficient number, since it is larger than the sum of its proper divisors (93849315).

225391389 is a wasteful number, since it uses less digits than its factorization.

225391389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260004 (or 259987 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 225391389 is about 15013.0406313978. The cubic root of 225391389 is about 608.5726629628.

The spelling of 225391389 in words is "two hundred twenty-five million, three hundred ninety-one thousand, three hundred eighty-nine".