20522502000 has 1920 divisors, whose sum is σ = 103421380608. Its totient is φ = 3649536000.

The previous prime is 20522501981. The next prime is 20522502019. The reversal of 20522502000 is 20522502.

It is an interprime number because it is at equal distance from previous prime (20522501981) and next prime (20522502019).

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

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

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 383 ways as a sum of consecutive naturals, for example, 306305967 + ... + 306306033.

Almost surely, 2^20522502000 is an apocalyptic number.

20522502000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20522502000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51710690304).

20522502000 is an abundant number, since it is smaller than the sum of its proper divisors (82898878608).

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

20522502000 is a wasteful number, since it uses less digits than its factorization.

20522502000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 125 counting only the distinct ones).

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

20522502000 divided by its reverse (20522502) gives a cube (1000 = 10³).

It can be divided in two parts, 2052 and 2502000, that added together give a palindrome (2504052).

The spelling of 20522502000 in words is "twenty billion, five hundred twenty-two million, five hundred two thousand".