613925 has 12 divisors (see below), whose sum is σ = 820260. Its totient is φ = 453120.

The previous prime is 613903. The next prime is 613957. The reversal of 613925 is 529316.

613925 = T₂₀₉ + T₂₁₀ + ... + T₂₃₃.

613925 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 6 ways, for example, as 70756 + 543169 = 266^2 + 737^2 .

It is not a de Polignac number, because 613925 - 2⁶ = 613861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613894 and 613903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 620 + ... + 1269.

It is an arithmetic number, because the mean of its divisors is an integer number (68355).

2⁶¹³⁹²⁵ is an apocalyptic number.

613925 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

613925 is a deficient number, since it is larger than the sum of its proper divisors (206335).

613925 is a wasteful number, since it uses less digits than its factorization.

613925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1907 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 613925 is about 783.5336623273. The cubic root of 613925 is about 84.9907717779.

It can be divided in two parts, 6 and 13925, that added together give a palindrome (13931).

The spelling of 613925 in words is "six hundred thirteen thousand, nine hundred twenty-five".