225450144535550 has 48 divisors (see below), whose sum is σ = 457634180408400. Its totient is φ = 81950447500800.

The previous prime is 225450144535529. The next prime is 225450144535591. The reversal of 225450144535550 is 55535441054522.

It is a super-2 number, since 2×225450144535550² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77121845 + ... + 79991744.

It is an arithmetic number, because the mean of its divisors is an integer number (9534045425175).

Almost surely, 2^{225450144535550} is an apocalyptic number.

225450144535550 is an abundant number, since it is smaller than the sum of its proper divisors (232184035872850).

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

225450144535550 is a wasteful number, since it uses less digits than its factorization.

225450144535550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157116221 (or 157116216 counting only the distinct ones).

The product of its (nonzero) digits is 12000000, while the sum is 50.

The spelling of 225450144535550 in words is "two hundred twenty-five trillion, four hundred fifty billion, one hundred forty-four million, five hundred thirty-five thousand, five hundred fifty".