20312625653 has 4 divisors (see below), whose sum is σ = 20349760800. Its totient is φ = 20275490508.

The previous prime is 20312625647. The next prime is 20312625667. The reversal of 20312625653 is 35652621302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20312625653 - 2⁸ = 20312625397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312625623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18566753 + ... + 18567846.

It is an arithmetic number, because the mean of its divisors is an integer number (5087440200).

Almost surely, 2^20312625653 is an apocalyptic number.

It is an amenable number.

20312625653 is a deficient number, since it is larger than the sum of its proper divisors (37135147).

20312625653 is an equidigital number, since it uses as much as digits as its factorization.

20312625653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37135146.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 20312625653 in words is "twenty billion, three hundred twelve million, six hundred twenty-five thousand, six hundred fifty-three".