73553537225 has 24 divisors (see below), whose sum is σ = 104266594368. Its totient is φ = 50421844800.

The previous prime is 73553537147. The next prime is 73553537227. The reversal of 73553537225 is 52273535537.

It is a de Polignac number, because none of the positive numbers 2^k-73553537225 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73553537225.

It is not an unprimeable number, because it can be changed into a prime (73553537227) 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 23 ways as a sum of consecutive naturals, for example, 550727 + ... + 671123.

It is an arithmetic number, because the mean of its divisors is an integer number (4344441432).

Almost surely, 2^73553537225 is an apocalyptic number.

It is an amenable number.

73553537225 is a deficient number, since it is larger than the sum of its proper divisors (30713057143).

73553537225 is a wasteful number, since it uses less digits than its factorization.

73553537225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123905 (or 123900 counting only the distinct ones).

The product of its digits is 3307500, while the sum is 47.

The spelling of 73553537225 in words is "seventy-three billion, five hundred fifty-three million, five hundred thirty-seven thousand, two hundred twenty-five".