73122225 has 48 divisors (see below), whose sum is σ = 134140224. Its totient is φ = 34848000.

The previous prime is 73122223. The next prime is 73122233. The reversal of 73122225 is 52222137.

It is a happy number.

It is not a de Polignac number, because 73122225 - 2¹ = 73122223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73122195 and 73122204.

It is not an unprimeable number, because it can be changed into a prime (73122223) 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 47 ways as a sum of consecutive naturals, for example, 49599 + ... + 51051.

It is an arithmetic number, because the mean of its divisors is an integer number (2794588).

Almost surely, 2^73122225 is an apocalyptic number.

73122225 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73122225 is a deficient number, since it is larger than the sum of its proper divisors (61017999).

73122225 is a wasteful number, since it uses less digits than its factorization.

73122225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1533 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 73122225 is about 8551.1534309706. The cubic root of 73122225 is about 418.1670406003.

The spelling of 73122225 in words is "seventy-three million, one hundred twenty-two thousand, two hundred twenty-five".