20312625604465 has 8 divisors (see below), whose sum is σ = 24399599227560. Its totient is φ = 16233801482112.

The previous prime is 20312625604463. The next prime is 20312625604477. The reversal of 20312625604465 is 56440652621302.

It can be written as a sum of positive squares in 4 ways, for example, as 10693050420529 + 9619575183936 = 3270023^2 + 3101544^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20312625604465 - 2¹ = 20312625604463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312625604463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037369700 + ... + 2037379669.

It is an arithmetic number, because the mean of its divisors is an integer number (3049949903445).

Almost surely, 2^{20312625604465} is an apocalyptic number.

It is an amenable number.

20312625604465 is a deficient number, since it is larger than the sum of its proper divisors (4086973623095).

20312625604465 is an equidigital number, since it uses as much as digits as its factorization.

20312625604465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074750371.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 20312625604465 in words is "twenty trillion, three hundred twelve billion, six hundred twenty-five million, six hundred four thousand, four hundred sixty-five".