613225243 has 4 divisors (see below), whose sum is σ = 613484320. Its totient is φ = 612966168.

The previous prime is 613225231. The next prime is 613225313. The reversal of 613225243 is 342522316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 613225243 - 2¹³ = 613217051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613228243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125955 + ... + 130732.

It is an arithmetic number, because the mean of its divisors is an integer number (153371080).

Almost surely, 2^613225243 is an apocalyptic number.

613225243 is a deficient number, since it is larger than the sum of its proper divisors (259077).

613225243 is a wasteful number, since it uses less digits than its factorization.

613225243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259076.

The product of its digits is 8640, while the sum is 28.

The square root of 613225243 is about 24763.3851280474. The cubic root of 613225243 is about 849.5846843043.

Adding to 613225243 its reverse (342522316), we get a palindrome (955747559).

It can be divided in two parts, 6132 and 25243, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 613225243 in words is "six hundred thirteen million, two hundred twenty-five thousand, two hundred forty-three".