618725005 has 16 divisors (see below), whose sum is σ = 778607280. Its totient is φ = 471356928.

The previous prime is 618724993. The next prime is 618725011. The reversal of 618725005 is 500527816.

It can be written as a sum of positive squares in 8 ways, for example, as 70509609 + 548215396 = 8397^2 + 23414^2 .

It is a cyclic number.

It is not a de Polignac number, because 618725005 - 2¹⁹ = 618200717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18642 + ... + 39811.

It is an arithmetic number, because the mean of its divisors is an integer number (48662955).

Almost surely, 2^618725005 is an apocalyptic number.

It is an amenable number.

618725005 is a deficient number, since it is larger than the sum of its proper divisors (159882275).

618725005 is a wasteful number, since it uses less digits than its factorization.

618725005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58560.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 618725005 is about 24874.1835041876. The cubic root of 618725005 is about 852.1169860926.

The spelling of 618725005 in words is "six hundred eighteen million, seven hundred twenty-five thousand, five".