225681786419 has 4 divisors (see below), whose sum is σ = 225894494160. Its totient is φ = 225469078680.

The previous prime is 225681786347. The next prime is 225681786427. The reversal of 225681786419 is 914687186522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225681786419 - 2⁸ = 225681786163 is a prime.

It is a super-2 number, since 2×225681786419² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225681786019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106352279 + ... + 106354400.

It is an arithmetic number, because the mean of its divisors is an integer number (56473623540).

Almost surely, 2^225681786419 is an apocalyptic number.

225681786419 is a deficient number, since it is larger than the sum of its proper divisors (212707741).

225681786419 is a wasteful number, since it uses less digits than its factorization.

225681786419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212707740.

The product of its digits is 11612160, while the sum is 59.

The spelling of 225681786419 in words is "two hundred twenty-five billion, six hundred eighty-one million, seven hundred eighty-six thousand, four hundred nineteen".