83613225 has 24 divisors (see below), whose sum is σ = 146374560. Its totient is φ = 41969920.

The previous prime is 83613209. The next prime is 83613247. The reversal of 83613225 is 52231638.

It is not a de Polignac number, because 83613225 - 2⁴ = 83613209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83613192 and 83613201.

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, 31515 + ... + 34064.

It is an arithmetic number, because the mean of its divisors is an integer number (6098940).

Almost surely, 2^83613225 is an apocalyptic number.

83613225 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83613225 is a deficient number, since it is larger than the sum of its proper divisors (62761335).

83613225 is a wasteful number, since it uses less digits than its factorization.

83613225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65609 (or 65604 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 83613225 is about 9144.0267388060. The cubic root of 83613225 is about 437.2787016862.

It can be divided in two parts, 83613 and 225, that added together give a palindrome (83838).

The spelling of 83613225 in words is "eighty-three million, six hundred thirteen thousand, two hundred twenty-five".