225722420240 has 80 divisors (see below), whose sum is σ = 526056830208. Its totient is φ = 90073847808.

The previous prime is 225722420177. The next prime is 225722420243. The reversal of 225722420240 is 42024227522.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×225722420240² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 225722420197 and 225722420206.

It is not an unprimeable number, because it can be changed into a prime (225722420243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77914472 + ... + 77917368.

Almost surely, 2^225722420240 is an apocalyptic number.

225722420240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225722420240 is an abundant number, since it is smaller than the sum of its proper divisors (300334409968).

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

225722420240 is a wasteful number, since it uses less digits than its factorization.

225722420240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896 (or 4890 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 32.

Adding to 225722420240 its reverse (42024227522), we get a palindrome (267746647762).

The spelling of 225722420240 in words is "two hundred twenty-five billion, seven hundred twenty-two million, four hundred twenty thousand, two hundred forty".