225544444400 has 60 divisors (see below), whose sum is σ = 591131496264. Its totient is φ = 82016160000.

The previous prime is 225544444399. The next prime is 225544444423. The reversal of 225544444400 is 4444445522.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25625651 + ... + 25634450.

Almost surely, 2^225544444400 is an apocalyptic number.

225544444400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225544444400 is an abundant number, since it is smaller than the sum of its proper divisors (365587051864).

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

225544444400 is a wasteful number, since it uses less digits than its factorization.

225544444400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51260130 (or 51260119 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 38.

Adding to 225544444400 its reverse (4444445522), we get a palindrome (229988889922).

The spelling of 225544444400 in words is "two hundred twenty-five billion, five hundred forty-four million, four hundred forty-four thousand, four hundred".