73321425 has 72 divisors (see below), whose sum is σ = 144064440. Its totient is φ = 35481600.

The previous prime is 73321421. The next prime is 73321439. The reversal of 73321425 is 52412337.

It can be written as a sum of positive squares in 12 ways, for example, as 3415104 + 69906321 = 1848^2 + 8361^2 .

It is not a de Polignac number, because 73321425 - 2² = 73321421 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73321421) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 110595 + ... + 111255.

It is an arithmetic number, because the mean of its divisors is an integer number (2000895).

Almost surely, 2^73321425 is an apocalyptic number.

73321425 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73321425 is a deficient number, since it is larger than the sum of its proper divisors (70743015).

73321425 is a wasteful number, since it uses less digits than its factorization.

73321425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 715 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 73321425 is about 8562.7930606783. The cubic root of 73321425 is about 418.5464206846.

The spelling of 73321425 in words is "seventy-three million, three hundred twenty-one thousand, four hundred twenty-five".