201563440225 has 24 divisors (see below), whose sum is σ = 285763852800. Its totient is φ = 138157029120.

The previous prime is 201563440217. The next prime is 201563440259. The reversal of 201563440225 is 522044365102.

It is not a de Polignac number, because 201563440225 - 2³ = 201563440217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179769 + ... + 659881.

It is an arithmetic number, because the mean of its divisors is an integer number (11906827200).

Almost surely, 2^201563440225 is an apocalyptic number.

201563440225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

201563440225 is a deficient number, since it is larger than the sum of its proper divisors (84200412575).

201563440225 is a wasteful number, since it uses less digits than its factorization.

201563440225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482529 (or 482524 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 201563440225 in words is "two hundred one billion, five hundred sixty-three million, four hundred forty thousand, two hundred twenty-five".