20081251375 has 8 divisors (see below), whose sum is σ = 25061401872. Its totient is φ = 16065001000.

The previous prime is 20081251367. The next prime is 20081251381. The reversal of 20081251375 is 57315218002.

It is not a de Polignac number, because 20081251375 - 2³ = 20081251367 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 20081251375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80324881 + ... + 80325130.

It is an arithmetic number, because the mean of its divisors is an integer number (3132675234).

Almost surely, 2^20081251375 is an apocalyptic number.

20081251375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20081251375 is a deficient number, since it is larger than the sum of its proper divisors (4980150497).

20081251375 is an equidigital number, since it uses as much as digits as its factorization.

20081251375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160650026 (or 160650016 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 20081251375 its reverse (57315218002), we get a palindrome (77396469377).

The spelling of 20081251375 in words is "twenty billion, eighty-one million, two hundred fifty-one thousand, three hundred seventy-five".