20330625465 has 36 divisors (see below), whose sum is σ = 37434638124. Its totient is φ = 10205170176.

The previous prime is 20330625463. The next prime is 20330625473. The reversal of 20330625465 is 56452603302.

20330625465 is a `hidden beast` number, since 20 + 3 + 3 + 0 + 625 + 4 + 6 + 5 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4188160656 + 16142464809 = 64716^2 + 127053^2 .

It is not a de Polignac number, because 20330625465 - 2¹ = 20330625463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20330625463) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 768642 + ... + 794651.

It is an arithmetic number, because the mean of its divisors is an integer number (1039851059).

Almost surely, 2^20330625465 is an apocalyptic number.

It is an amenable number.

20330625465 is a deficient number, since it is larger than the sum of its proper divisors (17104012659).

20330625465 is a wasteful number, since it uses less digits than its factorization.

20330625465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563338 (or 1563318 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

The spelling of 20330625465 in words is "twenty billion, three hundred thirty million, six hundred twenty-five thousand, four hundred sixty-five".