225705163561554 has 16 divisors (see below), whose sum is σ = 459061349617440. Its totient is φ = 73959884104800.

The previous prime is 225705163561517. The next prime is 225705163561571. The reversal of 225705163561554 is 455165361507522.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 225705163561494 and 225705163561503.

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, 318792603547 + ... + 318792604254.

It is an arithmetic number, because the mean of its divisors is an integer number (28691334351090).

Almost surely, 2^{225705163561554} is an apocalyptic number.

225705163561554 is an abundant number, since it is smaller than the sum of its proper divisors (233356186055886).

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

225705163561554 is a wasteful number, since it uses less digits than its factorization.

225705163561554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637585207865.

The product of its (nonzero) digits is 37800000, while the sum is 57.

The spelling of 225705163561554 in words is "two hundred twenty-five trillion, seven hundred five billion, one hundred sixty-three million, five hundred sixty-one thousand, five hundred fifty-four".