20025551304 has 144 divisors (see below), whose sum is σ = 59705378460. Its totient is φ = 6059116800.

The previous prime is 20025551297. The next prime is 20025551311. The reversal of 20025551304 is 40315552002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20025551297) and next prime (20025551311).

It can be written as a sum of positive squares in 2 ways, for example, as 17476311204 + 2549240100 = 132198^2 + 50490^2 .

It is a super-2 number, since 2×20025551304² (a number of 21 digits) contains 22 as substring.

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 35 ways as a sum of consecutive naturals, for example, 7639114 + ... + 7641734.

Almost surely, 2^20025551304 is an apocalyptic number.

20025551304 is a gapful number since it is divisible by the number (24) 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 20025551304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29852689230).

20025551304 is an abundant number, since it is smaller than the sum of its proper divisors (39679827156).

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

20025551304 is a wasteful number, since it uses less digits than its factorization.

20025551304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 20025551304 in words is "twenty billion, twenty-five million, five hundred fifty-one thousand, three hundred four".