225273786687 has 8 divisors (see below), whose sum is σ = 333738943280. Its totient is φ = 150182524440.

The previous prime is 225273786637. The next prime is 225273786697. The reversal of 225273786687 is 786687372522.

225273786687 is a `hidden beast` number, since 2 + 252 + 7 + 378 + 6 + 6 + 8 + 7 = 666.

It is not a de Polignac number, because 225273786687 - 2⁶ = 225273786623 is a prime.

It is a super-3 number, since 3×225273786687³ (a number of 35 digits) contains 333 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 (225273786637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4171736764 + ... + 4171736817.

It is an arithmetic number, because the mean of its divisors is an integer number (41717367910).

Almost surely, 2^225273786687 is an apocalyptic number.

225273786687 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

225273786687 is a deficient number, since it is larger than the sum of its proper divisors (108465156593).

225273786687 is an equidigital number, since it uses as much as digits as its factorization.

225273786687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343473590 (or 8343473584 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 225273786687 in words is "two hundred twenty-five billion, two hundred seventy-three million, seven hundred eighty-six thousand, six hundred eighty-seven".