921875200256 has 18 divisors (see below), whose sum is σ = 1840149326022. Its totient is φ = 460937600000.

The previous prime is 921875200243. The next prime is 921875200271. The reversal of 921875200256 is 652002578129.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 783550713856 + 138324486400 = 885184^2 + 371920^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 921875200256.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1800537245 + ... + 1800537756.

Almost surely, 2^921875200256 is an apocalyptic number.

It is an amenable number.

921875200256 is a deficient number, since it is larger than the sum of its proper divisors (918274125766).

921875200256 is an equidigital number, since it uses as much as digits as its factorization.

921875200256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601075017 (or 3601075003 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 921875200256 in words is "nine hundred twenty-one billion, eight hundred seventy-five million, two hundred thousand, two hundred fifty-six".