613020225 has 24 divisors (see below), whose sum is σ = 1016220672. Its totient is φ = 326075200.

The previous prime is 613020209. The next prime is 613020253. The reversal of 613020225 is 522020316.

It is not a de Polignac number, because 613020225 - 2⁴ = 613020209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18055 + ... + 39395.

It is an arithmetic number, because the mean of its divisors is an integer number (42342528).

Almost surely, 2^613020225 is an apocalyptic number.

It is an amenable number.

613020225 is a deficient number, since it is larger than the sum of its proper divisors (403200447).

613020225 is a wasteful number, since it uses less digits than its factorization.

613020225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737 (or 21732 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 613020225 is about 24759.2452429391. The cubic root of 613020225 is about 849.4899939386.

Subtracting from 613020225 its reverse (522020316), we obtain a palindrome (90999909).

The spelling of 613020225 in words is "six hundred thirteen million, twenty thousand, two hundred twenty-five".