20825999953 has 8 divisors (see below), whose sum is σ = 23039263296. Its totient is φ = 18666068400.

The previous prime is 20825999947. The next prime is 20825999989. The reversal of 20825999953 is 35999952802.

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 20825999953 - 2²⁹ = 20289129041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20825999891 and 20825999900.

It is not an unprimeable number, because it can be changed into a prime (20825999903) 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, 13332126 + ... + 13333687.

It is an arithmetic number, because the mean of its divisors is an integer number (2879907912).

Almost surely, 2^20825999953 is an apocalyptic number.

It is an amenable number.

20825999953 is a deficient number, since it is larger than the sum of its proper divisors (2213263343).

20825999953 is a wasteful number, since it uses less digits than its factorization.

20825999953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26665895.

The product of its (nonzero) digits is 15746400, while the sum is 61.

The spelling of 20825999953 in words is "twenty billion, eight hundred twenty-five million, nine hundred ninety-nine thousand, nine hundred fifty-three".