20622313825 has 12 divisors (see below), whose sum is σ = 25824857148. Its totient is φ = 16334504000.

The previous prime is 20622313823. The next prime is 20622313849. The reversal of 20622313825 is 52831322602.

It can be written as a sum of positive squares in 6 ways, for example, as 1356596224 + 19265717601 = 36832^2 + 138801^2 .

It is not a de Polignac number, because 20622313825 - 2¹ = 20622313823 is a prime.

It is a super-2 number, since 2×20622313825² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20622313823) 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 11 ways as a sum of consecutive naturals, for example, 4081102 + ... + 4086151.

It is an arithmetic number, because the mean of its divisors is an integer number (2152071429).

Almost surely, 2^20622313825 is an apocalyptic number.

20622313825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20622313825 is a deficient number, since it is larger than the sum of its proper divisors (5202543323).

20622313825 is a wasteful number, since it uses less digits than its factorization.

20622313825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8167364 (or 8167359 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 20622313825 in words is "twenty billion, six hundred twenty-two million, three hundred thirteen thousand, eight hundred twenty-five".