225663143620 has 24 divisors (see below), whose sum is σ = 480384284184. Its totient is φ = 89028746496.

The previous prime is 225663143539. The next prime is 225663143729. The reversal of 225663143620 is 26341366522.

It can be written as a sum of positive squares in 4 ways, for example, as 1212710976 + 224450432644 = 34824^2 + 473762^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77280439 + ... + 77283358.

It is an arithmetic number, because the mean of its divisors is an integer number (20016011841).

Almost surely, 2^225663143620 is an apocalyptic number.

225663143620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225663143620 is an abundant number, since it is smaller than the sum of its proper divisors (254721140564).

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

225663143620 is a wasteful number, since it uses less digits than its factorization.

225663143620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154563879 (or 154563877 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 225663143620 in words is "two hundred twenty-five billion, six hundred sixty-three million, one hundred forty-three thousand, six hundred twenty".