20081722238225 has 6 divisors (see below), whose sum is σ = 24901335575430. Its totient is φ = 16065377790560.

The previous prime is 20081722238219. The next prime is 20081722238231. The reversal of 20081722238225 is 52283222718002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20081722238219) and next prime (20081722238231).

It can be written as a sum of positive squares in 3 ways, for example, as 179666624641 + 19902055613584 = 423871^2 + 4461172^2 .

It is not a de Polignac number, because 20081722238225 - 2¹² = 20081722234129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401634444740 + ... + 401634444789.

It is an arithmetic number, because the mean of its divisors is an integer number (4150222595905).

Almost surely, 2^{20081722238225} is an apocalyptic number.

20081722238225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20081722238225 is a deficient number, since it is larger than the sum of its proper divisors (4819613337205).

20081722238225 is an equidigital number, since it uses as much as digits as its factorization.

20081722238225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803268889539 (or 803268889534 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 44.

The spelling of 20081722238225 in words is "twenty trillion, eighty-one billion, seven hundred twenty-two million, two hundred thirty-eight thousand, two hundred twenty-five".