73247225545 has 16 divisors (see below), whose sum is σ = 94673129040. Its totient is φ = 54081586944.

The previous prime is 73247225503. The next prime is 73247225549. The reversal of 73247225545 is 54552274237.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17398665216 + 55848560329 = 131904^2 + 236323^2 .

It is a cyclic number.

It is not a de Polignac number, because 73247225545 - 2¹⁹ = 73246701257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73247225495 and 73247225504.

It is not an unprimeable number, because it can be changed into a prime (73247225549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333387 + ... + 507583.

It is an arithmetic number, because the mean of its divisors is an integer number (5917070565).

Almost surely, 2^73247225545 is an apocalyptic number.

It is an amenable number.

73247225545 is a deficient number, since it is larger than the sum of its proper divisors (21425903495).

73247225545 is a wasteful number, since it uses less digits than its factorization.

73247225545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180684.

The product of its digits is 2352000, while the sum is 46.

The spelling of 73247225545 in words is "seventy-three billion, two hundred forty-seven million, two hundred twenty-five thousand, five hundred forty-five".