20525120671 has 8 divisors (see below), whose sum is σ = 23569516800. Its totient is φ = 17677137240.

The previous prime is 20525120669. The next prime is 20525120683. The reversal of 20525120671 is 17602152502.

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 20525120671 - 2¹ = 20525120669 is a prime.

It is a super-2 number, since 2×20525120671² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20525120771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49102951 + ... + 49103368.

It is an arithmetic number, because the mean of its divisors is an integer number (2946189600).

Almost surely, 2^20525120671 is an apocalyptic number.

20525120671 is a deficient number, since it is larger than the sum of its proper divisors (3044396129).

20525120671 is a wasteful number, since it uses less digits than its factorization.

20525120671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98206349.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 20525120671 in words is "twenty billion, five hundred twenty-five million, one hundred twenty thousand, six hundred seventy-one".