20425542623 has 8 divisors (see below), whose sum is σ = 20455871520. Its totient is φ = 20395238400.

The previous prime is 20425542607. The next prime is 20425542661. The reversal of 20425542623 is 32624552402.

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 20425542623 - 2⁴ = 20425542607 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 (20425542223) 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 7 ways as a sum of consecutive naturals, for example, 2187158 + ... + 2196476.

It is an arithmetic number, because the mean of its divisors is an integer number (2556983940).

Almost surely, 2^20425542623 is an apocalyptic number.

20425542623 is a deficient number, since it is larger than the sum of its proper divisors (30328897).

20425542623 is a wasteful number, since it uses less digits than its factorization.

20425542623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12337.

The product of its (nonzero) digits is 115200, while the sum is 35.

The spelling of 20425542623 in words is "twenty billion, four hundred twenty-five million, five hundred forty-two thousand, six hundred twenty-three".