663125254554 has 16 divisors (see below), whose sum is σ = 1515714867648. Its totient is φ = 189464358432.

The previous prime is 663125254537. The next prime is 663125254579. The reversal of 663125254554 is 455452521366.

It is a Curzon number.

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, 7894348227 + ... + 7894348310.

It is an arithmetic number, because the mean of its divisors is an integer number (94732179228).

Almost surely, 2^663125254554 is an apocalyptic number.

663125254554 is an abundant number, since it is smaller than the sum of its proper divisors (852589613094).

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

663125254554 is a wasteful number, since it uses less digits than its factorization.

663125254554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15788696549.

The product of its digits is 4320000, while the sum is 48.

The spelling of 663125254554 in words is "six hundred sixty-three billion, one hundred twenty-five million, two hundred fifty-four thousand, five hundred fifty-four".