618725423 has 2 divisors, whose sum is σ = 618725424. Its totient is φ = 618725422.

The previous prime is 618725417. The next prime is 618725477. The reversal of 618725423 is 324527816.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 618725423 - 2⁴ = 618725407 is a prime.

It is a super-2 number, since 2×618725423² = 765642298133057858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618725483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309362711 + 309362712.

It is an arithmetic number, because the mean of its divisors is an integer number (309362712).

Almost surely, 2^618725423 is an apocalyptic number.

618725423 is a deficient number, since it is larger than the sum of its proper divisors (1).

618725423 is an equidigital number, since it uses as much as digits as its factorization.

618725423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 38.

The square root of 618725423 is about 24874.1919064721. The cubic root of 618725423 is about 852.1171779844.

The spelling of 618725423 in words is "six hundred eighteen million, seven hundred twenty-five thousand, four hundred twenty-three".