9985925142 has 24 divisors (see below), whose sum is σ = 21639062016. Its totient is φ = 3328196976.

The previous prime is 9985925141. The next prime is 9985925179. The reversal of 9985925142 is 2415295899.

9985925142 is a `hidden beast` number, since 9 + 9 + 8 + 592 + 5 + 1 + 42 = 666.

9985925142 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985925141) 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 11 ways as a sum of consecutive naturals, for example, 119208 + ... + 184884.

It is an arithmetic number, because the mean of its divisors is an integer number (901627584).

Almost surely, 2^9985925142 is an apocalyptic number.

9985925142 is an abundant number, since it is smaller than the sum of its proper divisors (11653136874).

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

9985925142 is a wasteful number, since it uses less digits than its factorization.

9985925142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74132 (or 74129 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 9985925142 is about 99929.6009298546. The cubic root of 9985925142 is about 2153.4234366974.

The spelling of 9985925142 in words is "nine billion, nine hundred eighty-five million, nine hundred twenty-five thousand, one hundred forty-two".