9912543250 has 32 divisors (see below), whose sum is σ = 18566705664. Its totient is φ = 3962790000.

The previous prime is 9912543247. The next prime is 9912543281. The reversal of 9912543250 is 523452199.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477589 + ... + 497911.

It is an arithmetic number, because the mean of its divisors is an integer number (580209552).

Almost surely, 2^9912543250 is an apocalyptic number.

9912543250 is the 81292-nd pentagonal number.

9912543250 is a deficient number, since it is larger than the sum of its proper divisors (8654162414).

9912543250 is a wasteful number, since it uses less digits than its factorization.

9912543250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22291 (or 22281 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 9912543250 is about 99561.7559608106. The cubic root of 9912543250 is about 2148.1356291374.

The spelling of 9912543250 in words is "nine billion, nine hundred twelve million, five hundred forty-three thousand, two hundred fifty".