20625500616 has 192 divisors, whose sum is σ = 63736761600. Its totient is φ = 5530025088.

The previous prime is 20625500603. The next prime is 20625500629. The reversal of 20625500616 is 61600552602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20625500603) and next prime (20625500629).

It is a super-2 number, since 2×20625500616² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2386495 + ... + 2395121.

It is an arithmetic number, because the mean of its divisors is an integer number (331962300).

Almost surely, 2^20625500616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20625500616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31868380800).

20625500616 is an abundant number, since it is smaller than the sum of its proper divisors (43111260984).

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

20625500616 is a wasteful number, since it uses less digits than its factorization.

20625500616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8776 (or 8765 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 20625500616 in words is "twenty billion, six hundred twenty-five million, five hundred thousand, six hundred sixteen".