20134439325 has 648 divisors, whose sum is σ = 52695106464. Its totient is φ = 7544275200.

The previous prime is 20134439323. The next prime is 20134439341. The reversal of 20134439325 is 52393443102.

20134439325 is a `hidden beast` number, since 201 + 3 + 44 + 393 + 25 = 666.

It is not a de Polignac number, because 20134439325 - 2¹ = 20134439323 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20134439325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134439321) by changing a digit.

It is a polite number, since it can be written in 647 ways as a sum of consecutive naturals, for example, 468242754 + ... + 468242796.

Almost surely, 2^20134439325 is an apocalyptic number.

20134439325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20134439325 is an abundant number, since it is smaller than the sum of its proper divisors (32560667139).

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

20134439325 is a wasteful number, since it uses less digits than its factorization.

20134439325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 20134439325 in words is "twenty billion, one hundred thirty-four million, four hundred thirty-nine thousand, three hundred twenty-five".