613825 has 12 divisors (see below), whose sum is σ = 780208. Its totient is φ = 478800.

The previous prime is 613817. The next prime is 613829. The reversal of 613825 is 528316.

It is a happy number.

613825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 613825 - 2³ = 613817 is a prime.

It is a super-2 number, since 2×613825² = 753562261250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

613825 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 613825.

It is not an unprimeable number, because it can be changed into a prime (613829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 790 + ... + 1360.

2⁶¹³⁸²⁵ is an apocalyptic number.

It is an amenable number.

613825 is a deficient number, since it is larger than the sum of its proper divisors (166383).

613825 is a wasteful number, since it uses less digits than its factorization.

613825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 619 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 613825 is about 783.4698462609. The cubic root of 613825 is about 84.9861569152.

It can be divided in two parts, 6 and 13825, that added together give a palindrome (13831).

The spelling of 613825 in words is "six hundred thirteen thousand, eight hundred twenty-five".