225855791381 has 8 divisors (see below), whose sum is σ = 246607551264. Its totient is φ = 205140600720.

The previous prime is 225855791351. The next prime is 225855791389. The reversal of 225855791381 is 183197558522.

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

It is not a de Polignac number, because 225855791381 - 2²² = 225851597077 is a prime.

It is a super-2 number, since 2×225855791381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225855791389) 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, 9129386 + ... + 9154091.

It is an arithmetic number, because the mean of its divisors is an integer number (30825943908).

Almost surely, 2^225855791381 is an apocalyptic number.

It is an amenable number.

225855791381 is a deficient number, since it is larger than the sum of its proper divisors (20751759883).

225855791381 is a wasteful number, since it uses less digits than its factorization.

225855791381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18284611.

The product of its digits is 6048000, while the sum is 56.

The spelling of 225855791381 in words is "two hundred twenty-five billion, eight hundred fifty-five million, seven hundred ninety-one thousand, three hundred eighty-one".