20625052602 has 128 divisors (see below), whose sum is σ = 52411484160. Its totient is φ = 5255458560.

The previous prime is 20625052559. The next prime is 20625052621.

20625052602 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 20625052602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8325388 + ... + 8327864.

It is an arithmetic number, because the mean of its divisors is an integer number (409464720).

Almost surely, 2^20625052602 is an apocalyptic number.

20625052602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20625052602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26205742080).

20625052602 is an abundant number, since it is smaller than the sum of its proper divisors (31786431558).

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

20625052602 is a wasteful number, since it uses less digits than its factorization.

20625052602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836.

The product of its (nonzero) digits is 14400, while the sum is 30.

It can be divided in two parts, 206250 and 52602, that added together give a palindrome (258852).

The spelling of 20625052602 in words is "twenty billion, six hundred twenty-five million, fifty-two thousand, six hundred two".