618125563 has 4 divisors (see below), whose sum is σ = 674318808. Its totient is φ = 561932320.

The previous prime is 618125551. The next prime is 618125569. The reversal of 618125563 is 365521816.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 618125563 - 2⁹ = 618125051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618125569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28096606 + ... + 28096627.

It is an arithmetic number, because the mean of its divisors is an integer number (168579702).

Almost surely, 2^618125563 is an apocalyptic number.

618125563 is a deficient number, since it is larger than the sum of its proper divisors (56193245).

618125563 is a wasteful number, since it uses less digits than its factorization.

618125563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56193244.

The product of its digits is 43200, while the sum is 37.

The square root of 618125563 is about 24862.1311033467. The cubic root of 618125563 is about 851.8417104566.

The spelling of 618125563 in words is "six hundred eighteen million, one hundred twenty-five thousand, five hundred sixty-three".