20525111334 has 192 divisors, whose sum is σ = 55723659264. Its totient is φ = 5316150528.

The previous prime is 20525111293. The next prime is 20525111351. The reversal of 20525111334 is 43311152502.

20525111334 is a `hidden beast` number, since 2 + 0 + 525 + 1 + 1 + 133 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20525111298 and 20525111307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30317404 + ... + 30318080.

It is an arithmetic number, because the mean of its divisors is an integer number (290227392).

Almost surely, 2^20525111334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20525111334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27861829632).

20525111334 is an abundant number, since it is smaller than the sum of its proper divisors (35198547930).

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

20525111334 is a wasteful number, since it uses less digits than its factorization.

20525111334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20525111334 its reverse (43311152502), we get a palindrome (63836263836).

The spelling of 20525111334 in words is "twenty billion, five hundred twenty-five million, one hundred eleven thousand, three hundred thirty-four".