20025522 has 32 divisors (see below), whose sum is σ = 48548160. Its totient is φ = 6068160.

The previous prime is 20025517. The next prime is 20025527. The reversal of 20025522 is 22552002.

It is an interprime number because it is at equal distance from previous prime (20025517) and next prime (20025527).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20025495 and 20025504.

It is not an unprimeable number, because it can be changed into a prime (20025527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16263 + ... + 17450.

It is an arithmetic number, because the mean of its divisors is an integer number (1517130).

Almost surely, 2^20025522 is an apocalyptic number.

20025522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20025522 is an abundant number, since it is smaller than the sum of its proper divisors (28522638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20025522 is a wasteful number, since it uses less digits than its factorization.

20025522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33735 (or 33729 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 20025522 is about 4474.9884916053. The cubic root of 20025522 is about 271.5571748578.

Adding to 20025522 its reverse (22552002), we get a palindrome (42577524).

The spelling of 20025522 in words is "twenty million, twenty-five thousand, five hundred twenty-two".