225645604776 has 96 divisors (see below), whose sum is σ = 628717700520. Its totient is φ = 73065523200.

The previous prime is 225645604757. The next prime is 225645604801. The reversal of 225645604776 is 677406546522.

225645604776 is a `hidden beast` number, since 2 + 2 + 5 + 6 + 4 + 560 + 4 + 7 + 76 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 152469944676 + 73175660100 = 390474^2 + 270510^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 523786 + ... + 851846.

Almost surely, 2^225645604776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225645604776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314358850260).

225645604776 is an abundant number, since it is smaller than the sum of its proper divisors (403072095744).

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

225645604776 is a wasteful number, since it uses less digits than its factorization.

225645604776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328347 (or 328340 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 225645604776 in words is "two hundred twenty-five billion, six hundred forty-five million, six hundred four thousand, seven hundred seventy-six".