54921840225 has 24 divisors (see below), whose sum is σ = 103776125760. Its totient is φ = 25107126720.

The previous prime is 54921840223. The next prime is 54921840229. The reversal of 54921840225 is 52204812945.

It is not a de Polignac number, because 54921840225 - 2¹ = 54921840223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54921840223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52305990 + ... + 52307039.

It is an arithmetic number, because the mean of its divisors is an integer number (4324005240).

Almost surely, 2^54921840225 is an apocalyptic number.

It is an amenable number.

54921840225 is a deficient number, since it is larger than the sum of its proper divisors (48854285535).

54921840225 is a wasteful number, since it uses less digits than its factorization.

54921840225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104613049 (or 104613044 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 54921840225 in words is "fifty-four billion, nine hundred twenty-one million, eight hundred forty thousand, two hundred twenty-five".