20510825069 has 8 divisors (see below), whose sum is σ = 24460114560. Its totient is φ = 16816328496.

The previous prime is 20510825053. The next prime is 20510825081. The reversal of 20510825069 is 96052801502.

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 20510825069 - 2⁴ = 20510825053 is a prime.

It is a super-2 number, since 2×20510825069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20510825029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63698054 + ... + 63698375.

It is an arithmetic number, because the mean of its divisors is an integer number (3057514320).

Almost surely, 2^20510825069 is an apocalyptic number.

It is an amenable number.

20510825069 is a deficient number, since it is larger than the sum of its proper divisors (3949289491).

20510825069 is a wasteful number, since it uses less digits than its factorization.

20510825069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127396459.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 20510825069 in words is "twenty billion, five hundred ten million, eight hundred twenty-five thousand, sixty-nine".