72520055225 has 12 divisors (see below), whose sum is σ = 90004978896. Its totient is φ = 57964360080.

The previous prime is 72520055221. The next prime is 72520055227. The reversal of 72520055225 is 52255002527.

It is not a de Polignac number, because 72520055225 - 2² = 72520055221 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72520055221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1263467 + ... + 1319616.

It is an arithmetic number, because the mean of its divisors is an integer number (7500414908).

Almost surely, 2^72520055225 is an apocalyptic number.

It is an amenable number.

72520055225 is a deficient number, since it is larger than the sum of its proper divisors (17484923671).

72520055225 is a wasteful number, since it uses less digits than its factorization.

72520055225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584216 (or 2584211 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 35.

The spelling of 72520055225 in words is "seventy-two billion, five hundred twenty million, fifty-five thousand, two hundred twenty-five".