225222705312 has 96 divisors (see below), whose sum is σ = 650286512064. Its totient is φ = 68249265920.

The previous prime is 225222705289. The next prime is 225222705341. The reversal of 225222705312 is 213507222522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 753543 + ... + 1009094.

It is an arithmetic number, because the mean of its divisors is an integer number (6773817834).

Almost surely, 2^225222705312 is an apocalyptic number.

225222705312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

225222705312 is an abundant number, since it is smaller than the sum of its proper divisors (425063806752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225222705312 is a wasteful number, since it uses less digits than its factorization.

225222705312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762683 (or 1762653 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

Adding to 225222705312 its reverse (213507222522), we get a palindrome (438729927834).

The spelling of 225222705312 in words is "two hundred twenty-five billion, two hundred twenty-two million, seven hundred five thousand, three hundred twelve".