225781845514920 has 192 divisors, whose sum is σ = 734083847115840. Its totient is φ = 60184469145600.

The previous prime is 225781845514903. The next prime is 225781845514949. The reversal of 225781845514920 is 29415548187522.

It is a happy number.

225781845514920 is a `hidden beast` number, since 2 + 2 + 5 + 7 + 8 + 18 + 4 + 551 + 49 + 20 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13430593315 + ... + 13430610125.

It is an arithmetic number, because the mean of its divisors is an integer number (3823353370395).

Almost surely, 2^{225781845514920} is an apocalyptic number.

225781845514920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225781845514920 is an abundant number, since it is smaller than the sum of its proper divisors (508302001600920).

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

225781845514920 is a wasteful number, since it uses less digits than its factorization.

225781845514920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29496 (or 29489 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

The spelling of 225781845514920 in words is "two hundred twenty-five trillion, seven hundred eighty-one billion, eight hundred forty-five million, five hundred fourteen thousand, nine hundred twenty".