20470455625 has 45 divisors (see below), whose sum is σ = 26291808147. Its totient is φ = 15932832000.

The previous prime is 20470455617. The next prime is 20470455637. The reversal of 20470455625 is 52655407402.

The square root of 20470455625 is 143075.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 16588667209 + 3881788416 = 128797^2 + 62304^2 .

It is not a de Polignac number, because 20470455625 - 2³ = 20470455617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 211035577 + ... + 211035673.

Almost surely, 2^20470455625 is an apocalyptic number.

20470455625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20470455625 is the 143075-th square number.

20470455625 is the 71538-th centered octagonal number.

It is an amenable number.

20470455625 is a deficient number, since it is larger than the sum of its proper divisors (5821352522).

20470455625 is an frugal number, since it uses more digits than its factorization.

20470455625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 40.

The spelling of 20470455625 in words is "twenty billion, four hundred seventy million, four hundred fifty-five thousand, six hundred twenty-five".