225651723206 has 32 divisors (see below), whose sum is σ = 426748488768. Its totient is φ = 87091522560.

The previous prime is 225651723203. The next prime is 225651723221. The reversal of 225651723206 is 602327156522.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225651723203) 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 15 ways as a sum of consecutive naturals, for example, 15112595 + ... + 15127518.

It is an arithmetic number, because the mean of its divisors is an integer number (13335890274).

Almost surely, 2^225651723206 is an apocalyptic number.

225651723206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

225651723206 is a deficient number, since it is larger than the sum of its proper divisors (201096765562).

225651723206 is a wasteful number, since it uses less digits than its factorization.

225651723206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30240176.

The product of its (nonzero) digits is 302400, while the sum is 41.

Adding to 225651723206 its reverse (602327156522), we get a palindrome (827978879728).

The spelling of 225651723206 in words is "two hundred twenty-five billion, six hundred fifty-one million, seven hundred twenty-three thousand, two hundred six".