225391387 has 8 divisors (see below), whose sum is σ = 246844080. Its totient is φ = 204526560.

The previous prime is 225391381. The next prime is 225391403. The reversal of 225391387 is 783193522.

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 225391387 - 2⁷ = 225391259 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 146164 + ... + 147697.

It is an arithmetic number, because the mean of its divisors is an integer number (30855510).

Almost surely, 2^225391387 is an apocalyptic number.

225391387 is a deficient number, since it is larger than the sum of its proper divisors (21452693).

225391387 is a wasteful number, since it uses less digits than its factorization.

225391387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293933.

The product of its digits is 90720, while the sum is 40.

The square root of 225391387 is about 15013.0405647890. The cubic root of 225391387 is about 608.5726611627.

The spelling of 225391387 in words is "two hundred twenty-five million, three hundred ninety-one thousand, three hundred eighty-seven".