20767148525 has 6 divisors (see below), whose sum is σ = 25751264202. Its totient is φ = 16613718800.

The previous prime is 20767148513. The next prime is 20767148539. The reversal of 20767148525 is 52584176702.

It can be written as a sum of positive squares in 3 ways, for example, as 160833124 + 20606315401 = 12682^2 + 143549^2 .

It is not a de Polignac number, because 20767148525 - 2²⁸ = 20498713069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20767148525.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 415342946 + ... + 415342995.

It is an arithmetic number, because the mean of its divisors is an integer number (4291877367).

Almost surely, 2^20767148525 is an apocalyptic number.

20767148525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20767148525 is a deficient number, since it is larger than the sum of its proper divisors (4984115677).

20767148525 is an equidigital number, since it uses as much as digits as its factorization.

20767148525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830685951 (or 830685946 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 20767148525 in words is "twenty billion, seven hundred sixty-seven million, one hundred forty-eight thousand, five hundred twenty-five".