20111672125 has 16 divisors (see below), whose sum is σ = 25116938496. Its totient is φ = 16078074000.

The previous prime is 20111672117. The next prime is 20111672143. The reversal of 20111672125 is 52127611102.

It is not a de Polignac number, because 20111672125 - 2³ = 20111672117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111672093 and 20111672102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125280 + ... + 236470.

It is an arithmetic number, because the mean of its divisors is an integer number (1569808656).

Almost surely, 2^20111672125 is an apocalyptic number.

20111672125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20111672125 is a deficient number, since it is larger than the sum of its proper divisors (5005266371).

20111672125 is a wasteful number, since it uses less digits than its factorization.

20111672125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112653 (or 112643 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The spelling of 20111672125 in words is "twenty billion, one hundred eleven million, six hundred seventy-two thousand, one hundred twenty-five".