450725703521 has 4 divisors (see below), whose sum is σ = 459229962132. Its totient is φ = 442221444912.

The previous prime is 450725703503. The next prime is 450725703523. The reversal of 450725703521 is 125307527054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108266663521 + 342459040000 = 329039^2 + 585200^2 .

It is a cyclic number.

It is not a de Polignac number, because 450725703521 - 2⁶ = 450725703457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450725703523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252129226 + ... + 4252129331.

It is an arithmetic number, because the mean of its divisors is an integer number (114807490533).

Almost surely, 2^450725703521 is an apocalyptic number.

It is an amenable number.

450725703521 is a deficient number, since it is larger than the sum of its proper divisors (8504258611).

450725703521 is an equidigital number, since it uses as much as digits as its factorization.

450725703521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8504258610.

The product of its (nonzero) digits is 294000, while the sum is 41.

The spelling of 450725703521 in words is "four hundred fifty billion, seven hundred twenty-five million, seven hundred three thousand, five hundred twenty-one".