9225777720572 has 24 divisors (see below), whose sum is σ = 18764293672320. Its totient is φ = 3886889402160.

The previous prime is 9225777720559. The next prime is 9225777720587. The reversal of 9225777720572 is 2750277775229.

It is a happy number.

It is a super-2 number, since 2×9225777720572² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2792303954 + ... + 2792307257.

It is an arithmetic number, because the mean of its divisors is an integer number (781845569680).

Almost surely, 2^{9225777720572} is an apocalyptic number.

It is an amenable number.

9225777720572 is an abundant number, since it is smaller than the sum of its proper divisors (9538515951748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9225777720572 is a wasteful number, since it uses less digits than its factorization.

9225777720572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5584611281 (or 5584611279 counting only the distinct ones).

The product of its (nonzero) digits is 60505200, while the sum is 62.

The spelling of 9225777720572 in words is "nine trillion, two hundred twenty-five billion, seven hundred seventy-seven million, seven hundred twenty thousand, five hundred seventy-two".