20525118185 has 48 divisors (see below), whose sum is σ = 29152146240. Its totient is φ = 13676976000.

The previous prime is 20525118169. The next prime is 20525118203. The reversal of 20525118185 is 58181152502.

It is not a de Polignac number, because 20525118185 - 2⁴ = 20525118169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16302086 + ... + 16303344.

It is an arithmetic number, because the mean of its divisors is an integer number (607336380).

Almost surely, 2^20525118185 is an apocalyptic number.

It is an amenable number.

20525118185 is a deficient number, since it is larger than the sum of its proper divisors (8627028055).

20525118185 is a wasteful number, since it uses less digits than its factorization.

20525118185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 38.

The spelling of 20525118185 in words is "twenty billion, five hundred twenty-five million, one hundred eighteen thousand, one hundred eighty-five".