20529525019 has 8 divisors (see below), whose sum is σ = 20650291200. Its totient is φ = 20409109416.

The previous prime is 20529525011. The next prime is 20529525041. The reversal of 20529525019 is 91052592502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20529525019 - 2³ = 20529525011 is a prime.

It is a super-2 number, since 2×20529525019² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20529525011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30282 + ... + 204880.

It is an arithmetic number, because the mean of its divisors is an integer number (2581286400).

Almost surely, 2^20529525019 is an apocalyptic number.

20529525019 is a deficient number, since it is larger than the sum of its proper divisors (120766181).

20529525019 is a wasteful number, since it uses less digits than its factorization.

20529525019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175289.

The product of its (nonzero) digits is 81000, while the sum is 40.

The spelling of 20529525019 in words is "twenty billion, five hundred twenty-nine million, five hundred twenty-five thousand, nineteen".