20085522525 has 144 divisors (see below), whose sum is σ = 40331079360. Its totient is φ = 9505843200.

The previous prime is 20085522487. The next prime is 20085522529. The reversal of 20085522525 is 52522558002.

20085522525 is a `hidden beast` number, since 2 + 0 + 0 + 85 + 52 + 2 + 525 = 666.

It is not a de Polignac number, because 20085522525 - 2¹² = 20085518429 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20085522525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20085522529) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4767670 + ... + 4771880.

It is an arithmetic number, because the mean of its divisors is an integer number (280076940).

Almost surely, 2^20085522525 is an apocalyptic number.

20085522525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20085522525 is an abundant number, since it is smaller than the sum of its proper divisors (20245556835).

20085522525 is a wasteful number, since it uses less digits than its factorization.

20085522525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4316 (or 4308 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The spelling of 20085522525 in words is "twenty billion, eighty-five million, five hundred twenty-two thousand, five hundred twenty-five".