9725306287144 has 32 divisors (see below), whose sum is σ = 20840074735680. Its totient is φ = 4167961870464.

The previous prime is 9725306287111. The next prime is 9725306287313. The reversal of 9725306287144 is 4417826035279.

It is a super-2 number, since 2×9725306287144² (a number of 27 digits) contains 22 as substring.

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, 10156524 + ... + 11072740.

It is an arithmetic number, because the mean of its divisors is an integer number (651252335490).

It is a 1-persistent number, because it is pandigital, but 2⋅9725306287144 = 19450612574288 is not.

Almost surely, 2^{9725306287144} is an apocalyptic number.

It is an amenable number.

9725306287144 is an abundant number, since it is smaller than the sum of its proper divisors (11114768448536).

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

9725306287144 is a wasteful number, since it uses less digits than its factorization.

9725306287144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105777 (or 1105773 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 9725306287144 in words is "nine trillion, seven hundred twenty-five billion, three hundred six million, two hundred eighty-seven thousand, one hundred forty-four".