618725 has 6 divisors (see below), whose sum is σ = 767250. Its totient is φ = 494960.

The previous prime is 618719. The next prime is 618799. The reversal of 618725 is 527816.

618725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 185761 + 432964 = 431^2 + 658^2 .

It is not a de Polignac number, because 618725 - 2¹⁴ = 602341 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12350 + ... + 12399.

It is an arithmetic number, because the mean of its divisors is an integer number (127875).

2⁶¹⁸⁷²⁵ is an apocalyptic number.

It is an amenable number.

618725 is a deficient number, since it is larger than the sum of its proper divisors (148525).

618725 is a wasteful number, since it uses less digits than its factorization.

618725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24759 (or 24754 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 618725 is about 786.5907449239. The cubic root of 618725 is about 85.2116983797.

Subtracting from 618725 its reverse (527816), we obtain a palindrome (90909).

The spelling of 618725 in words is "six hundred eighteen thousand, seven hundred twenty-five".