20025512001 has 24 divisors (see below), whose sum is σ = 31572725184. Its totient is φ = 12129992160.

The previous prime is 20025511999. The next prime is 20025512009. The reversal of 20025512001 is 10021552002.

It is not a de Polignac number, because 20025512001 - 2¹ = 20025511999 is a prime.

It is a super-2 number, since 2×20025512001² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20025512009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128095 + ... + 237611.

It is an arithmetic number, because the mean of its divisors is an integer number (1315530216).

Almost surely, 2^20025512001 is an apocalyptic number.

It is an amenable number.

20025512001 is a deficient number, since it is larger than the sum of its proper divisors (11547213183).

20025512001 is a wasteful number, since it uses less digits than its factorization.

20025512001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111381 (or 111378 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The spelling of 20025512001 in words is "twenty billion, twenty-five million, five hundred twelve thousand, one".