73225613 has 8 divisors (see below), whose sum is σ = 77632632. Its totient is φ = 68829696.

The previous prime is 73225597. The next prime is 73225619. The reversal of 73225613 is 31652237.

It can be written as a sum of positive squares in 4 ways, for example, as 3364 + 73222249 = 58^2 + 8557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73225613 - 2⁴ = 73225597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73225619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13631 + ... + 18227.

It is an arithmetic number, because the mean of its divisors is an integer number (9704079).

Almost surely, 2^73225613 is an apocalyptic number.

It is an amenable number.

73225613 is a deficient number, since it is larger than the sum of its proper divisors (4407019).

73225613 is a wasteful number, since it uses less digits than its factorization.

73225613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5551.

The product of its digits is 7560, while the sum is 29.

The square root of 73225613 is about 8557.1965619588. The cubic root of 73225613 is about 418.3640308403.

The spelling of 73225613 in words is "seventy-three million, two hundred twenty-five thousand, six hundred thirteen".