20135707533725 has 24 divisors (see below), whose sum is σ = 28545004371840. Its totient is φ = 13802585728320.

The previous prime is 20135707533719. The next prime is 20135707533727. The reversal of 20135707533725 is 52733570753102.

It is not a de Polignac number, because 20135707533725 - 2⁴ = 20135707533709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20135707533727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19309610 + ... + 20325659.

It is an arithmetic number, because the mean of its divisors is an integer number (1189375182160).

Almost surely, 2^{20135707533725} is an apocalyptic number.

20135707533725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20135707533725 is a deficient number, since it is larger than the sum of its proper divisors (8409296838115).

20135707533725 is a wasteful number, since it uses less digits than its factorization.

20135707533725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39638189 (or 39638184 counting only the distinct ones).

The product of its (nonzero) digits is 4630500, while the sum is 50.

The spelling of 20135707533725 in words is "twenty trillion, one hundred thirty-five billion, seven hundred seven million, five hundred thirty-three thousand, seven hundred twenty-five".